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问答题Practice 13　　(1) Actually, the world’s birth rate is falling. But so is death rate, as medical advances have made it possible for man to live longer than before. Such advances have also reduced baby death rate. (2) Unless population growth is reduced,

题目
问答题
Practice 13　　(1) Actually, the world’s birth rate is falling. But so is death rate, as medical advances have made it possible for man to live longer than before. Such advances have also reduced baby death rate. (2) Unless population growth is reduced, the world population may reach l2 billion in a century. Is the earth capable of providing a good life for so large a population?
参考答案和解析
正确答案：
(1) 事实上,世界上的生育率在降低,但死亡率也同样在降低,因为医学发展使人们能比以前活得更长。
(2) 除非降低人口增长速度,否则一个世纪之内世界人口将达到120亿。
解析： 暂无解析
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相似问题和答案

第1题：

In the 1970s among the developed countries, Britain maintained the lowest _____ rate and the highest _____ rate.

A.inflation, growth

B.growth, inflation

C.growth, divorce

D.growth, birth


正确答案：B

第2题：

In spite of all stories of prosperity in the United States, not only does poverty exist there, but crimes of various types have been increasing at an alarming rate． Most acts of violence were committed by young people． 57% of the criminals arrested in 1979 were youths below 25 of age．
Everyone agrees that crime is partly a result of bad material conditions: poverty, lack of education,living without a settled home,being parentless,sufferings from other kinds of misfortune, etc．
There are also other factors than material conditions which are responsible for the sharp increase of crime rate． In the first place, some state laws provide a death penalty but some not．Secondly, the Constitution allows every citizen to carry weapons for his own protection． It is therefore possible and easy for anyone in the country to get a gun． Finally, there has been too much shown on TV and too much reported in newspaper of all kinds of crime, the details of which are so accurately described that even children know how to duplicate what they have seen or read．
All these have resulted in a high frequency of crimes committed both by professional criminals and by nonprofessional ones in murder, drug smuggling, robbery, etc．
Which of the following is correct according to the text?

A.Of the criminals arrested in 1970, 57 percent were youths below 25 of age．
B.Lack of education has little to do with the crime rate．
C.Differences in state laws for death penalty also account for the increase of crime rate．
D.Drug smuggling is the only product of too many shows and reports．

答案：C
解析：
根据第三段“In the first place，some state laws provide a death penalty but some not．”可知，有些州存在死刑刑罚而有些州并没有，导致了犯罪率上升。

第3题：

The principal factor depressing life expectancy in developing countries has always been the high death rate for infants and children. The World Bank studies suggest that as much as two thirds of the difference in life-spans between people in developed countries and those in developing ones can be traced to differences in survival rates for children under five. It is here where the most improvement has come. According to UN estimates, significant regional drops in infant mortality - ranging from 25 percent to 60 percent and centering near 40 percent - appear to have taken place between the late 1950s and the late 1970s in northern Africa, Latin America, and Asia. Although sub-Saharan Africa' s mortality trends cannot be quantified with confidence, there is reason to believe that life expectancy has risen and infant mortality has declined in that region as well. There is little doubt that population growth has accelerated in sub-Saharan Africa since the 1950s; in fact, sub-Saharan Africa is widely thought to have the highest rate of population growth of any major region in the world. Only a small portion of that acceleration is likely to have been caused by increases in fertility (and increases in fertility, insofar as they have occurred, may also imply improvements in health and nutrition).

Mortality, of course, is not a perfect measure of nutritional change. Improved nutrition is only one of a number of forces that have been pushing down death rates in developing countries. Others include the upgrading of hygiene and sanitation; the extension of public health services; medical innovations; improvements in education, communications, transportation, and, in some areas, civil order. Even so, the extent to which improvements innutrition—both direct and indirect—have reduced mortality in developing countries has frequently been underestimated. For example, Sri Lanka experienced an abrupt jump in life expectancy shortly after the Second World War. Whereas this was long described as a "technical fix"—a triumph of DDT over the anopheles mosquito—years later researchers realized that abrupt and rapid drops in mortality had also taken place in Sri Lanka' s highlands, or "dry zones", where malaria had never been a serious problem. In both highlands and lowland regions health improved in tandem with access to food.

According to the author, life expectancy in developing countries is not high mainly because developing countries______.

A．have a low standard of living

B．have no public health services

C．have no public and private hygiene and sanitation

D．have low survival rates for infants and children


正确答案：D
解析：从第一段第二句可以看出答案。

第4题：

共用题干
第二篇

In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.
One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.
However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.
Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.
Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.
These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.

When countries become industrialized,________.
A:families often become larger
B:the birth rate generally goes down
C:women usually decide not to have a family
D:the population generally grows rapidly

答案：B
解析：
根据文章第二段我们知道“在传统的农业经济中，家庭成员多是十分有利的。孩子多就意味着田里的劳动力多，而且有人给父母养老”。因此选项A是正确的。
文章第二段以意大利为例证明了国家工业化以后，人口出生率就会降低的观点。因此只有选项B是正确的。
文章第二段的叙述说明如今的意大利是一个工业化、低出生率的国家。因此选项C是正确的。
文章第三段第一句话告诉我们经济并不是唯一影响出生率的重要因素，这暗示了接下来会讲一些其他影响出生率的因素。文章以沙特阿拉伯为例就是为了证明这一点。因此选项B是正确的。
文章第四段后半部分讲到这些国家的政府采取措施为妇女提供更多的教育和机会来改善妇女的生活状况。因此选项D是正确的。

第5题：

共用题干
第二篇

In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.
One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.
However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.
Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.
Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.
These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.

In a traditional agricultural economy,a large family_________.
A:can be an advantage
B:may limit income
C:isn't necessary
D:is expensive

答案：A
解析：
根据文章第二段我们知道“在传统的农业经济中，家庭成员多是十分有利的。孩子多就意味着田里的劳动力多，而且有人给父母养老”。因此选项A是正确的。
文章第二段以意大利为例证明了国家工业化以后，人口出生率就会降低的观点。因此只有选项B是正确的。
文章第二段的叙述说明如今的意大利是一个工业化、低出生率的国家。因此选项C是正确的。
文章第三段第一句话告诉我们经济并不是唯一影响出生率的重要因素，这暗示了接下来会讲一些其他影响出生率的因素。文章以沙特阿拉伯为例就是为了证明这一点。因此选项B是正确的。
文章第四段后半部分讲到这些国家的政府采取措施为妇女提供更多的教育和机会来改善妇女的生活状况。因此选项D是正确的。

第6题：

Which of the following statements is NOT true?

A) World population is increasing at a rate of 150 per minute.

B) Lower death rates also contribute to world population growth.

C) The population of Columbia has been doubling every year for 21 years.

D) The United States is usually doubling its population about every 87 years.


正确答案：C
答案：C
[试题分析] 事实判断题。
[详细解答] 根据第三段第一句World population is increasing at a rate of 9,000 per hour．可判断A世界人口每分钟增加150人正确；根据该段第二句This is not only due to higher birth rates，but to lower death rates as well．可判断B论断正确；而由第四段的Some countries，such as Columbia， Thailand，Morocco，Costa Rica，and the Philippines．are doubling their populations about every twenty-one years可判断， C哥伦比亚人口持续21年每年翻一番的论断混淆了事实，论断错误；D美国人口每87年翻一番可根据第三段第二句The United States is doubling its population about every eighty-seven years一句判断为正确论断。因此，本题答案为C。

第7题：

共用题干
第二篇

In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.
One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.
However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.
Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.
Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.
These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.

Saudi Arabia is mentioned in the passage because it shows that________.
A:the most important factor influencing birth rate is the economy
B:factors other than the economy influence birth rate
C:women who have a high income usually have few children
D:the birth rate depends on per capita income

答案：B
解析：
根据文章第二段我们知道“在传统的农业经济中，家庭成员多是十分有利的。孩子多就意味着田里的劳动力多，而且有人给父母养老”。因此选项A是正确的。
文章第二段以意大利为例证明了国家工业化以后，人口出生率就会降低的观点。因此只有选项B是正确的。
文章第二段的叙述说明如今的意大利是一个工业化、低出生率的国家。因此选项C是正确的。
文章第三段第一句话告诉我们经济并不是唯一影响出生率的重要因素，这暗示了接下来会讲一些其他影响出生率的因素。文章以沙特阿拉伯为例就是为了证明这一点。因此选项B是正确的。
文章第四段后半部分讲到这些国家的政府采取措施为妇女提供更多的教育和机会来改善妇女的生活状况。因此选项D是正确的。

第8题：

The world’s population continues to grow. There now are about 4 billion of us on earth. That could reach 6 billion by the end of the century and 11 billion in a further 75 years. Experts have long been concerned about such a growth. Where will we find the food, water, jobs, houses, school and health care for all these people?

A major new study shows that the situation may be changing. A large and rapid drop in the world’s birth rate has taken place during the past 10 years. Families generally are smaller now than they were a few years ago. It is happening in both developing and industrial nations.

Researchers said they found a number of reasons for this. More men and women are waiting longer to get married and are using birth control devices and methods to prevent or delay pregnancy. More women are going to school or working at jobs away from home instead of having children. And more governments, especially in developing nations, now support family planning programs to reduce population grow.

China is one of the nations that have made great progress in reducing its population growth. China has already cut its rate of population growth by about half since 1970.

Each Chinese family is now urged to have no more than one child. And the hope is to reach a zero population growth with the total number of births equaling the total number of deaths by the year 2000.

Several nations in Europe already have fewer births than deaths. Experts said that these nations could face a serious shortage of workers in the future. And the persons who are working could face much higher taxes to help support the growing number of retired people.

1. The world’s population could reach ____________.

A. 6 billion in 75 years

B. 11 billion in 2075

C. 11 billion by the end of this century

D. 600 million in 15 years

2. Which of the following is true?

A. The world’s birth rate is higher than ten years ago.

B. There has been a slower population growth in the past ten years.

C. Families are as large as before.

D. Birth control has been well practiced in all nations.

3. By the year 2000, the number of births and the number of deaths in China will _______.

A. be greatly different

B. drop a great deal

C. be equal

D. become much larger

4. According to the essay, China’s population control ________.

A. is not quite successful

B. should be considered a big success

C. is far from being successful

D. is a complete failure

5. It may happen in the future that the people who are working in Europe will have to pay much higher taxes because___________.

A. more and more children will be born

B. the number of retired people will become ever larger

C. fewer and fewer children will be born

D. they will be making a lot of money


答案：BBCBB

解析：译文

世界人口继续增长。现在地球上大约有40亿人。到本世纪末，这一数字可能会达到60亿，再过75年就会达到110亿。长期以来，专家们一直关注这种增长。我们在哪里能找到这些人的食物、水、工作、房子、学校和医疗保健？

一项新的重大研究表明，情况可能正在改变。在过去10年里，世界人口出生率急剧下降。现在的家庭一般比几年前小。发展中国家和工业国家都在发生这种情况。

研究人员说，他们发现了很多原因。越来越多的男人和女人等待结婚的时间更长，他们使用节育设备和方法来预防或推迟怀孕。越来越多的妇女去上学或者在离家不远的地方工作，而不是生孩子。越来越多的政府，特别是发展中国家，现在支持计划生育计划以减少人口增长。

中国是在减少人口增长方面取得重大进展的国家之一。自1970年以来，中国已经将人口增长率降低了大约一半。

现在每个中国家庭都被要求最多生一个孩子。希望到2000年人口零增长，出生总数等于死亡总数。

欧洲一些国家的出生人数已经少于死亡人数。专家说，这些国家未来可能面临严重的劳动力短缺。而那些正在工作的人可能面临更高的税收，以帮助支持越来越多的退休人员。

1、世界人口可能达到。

A、 75年60亿

B、 2075年110亿

C、 到本世纪末达到110亿美元

D、 15年6亿

2以下哪项是正确的？

A、 世界的出生率比十年前高。

B、 在过去的十年里人口增长缓慢。

C、 家庭和以前一样大。

D、 所有国家都实行节育。

三。到2000年，中国的出生人数和死亡人数将。

A、 大相径庭

B、 掉了很多东西

C、 平等

D、 变得更大

4；根据这篇文章，中国的人口控制。

A、 不是很成功

B、 应该算是大成功了

C、 远没有成功

D、 完全失败了

5将来，在欧洲工作的人可能要付更高的税，因为。

A、 会有越来越多的孩子出生

B、 退休人员的数量将越来越多

C、 孩子会越来越少

D、 他们会赚很多钱

1题：世界人口可能达到2075年110亿，文章第二行有显示

2题：在过去的十年里人口增长缓慢，文章第四行有显示

3题：到2000年，中国的出生人数和死亡人数将平等，文章倒数第三行有显示

4题：根据这篇文章，中国的人口控制应该算是大成功了，人口没有急剧增长

5题：将来，在欧洲工作的人可能要付更高的税，因为退休人员的数量将越来越多，文章倒数第一段有显示

第9题：

共用题干
第二篇

In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.
One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.
However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.
Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.
Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.
These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.

According to this passage,Italy today is an example of an__________.
A:agricultural country with a high birth rate
B:agricultural country with a low birth rate
C:industrialized country with a low birth rate
D:industrialized country with a high birth rate

答案：C
解析：
根据文章第二段我们知道“在传统的农业经济中，家庭成员多是十分有利的。孩子多就意味着田里的劳动力多，而且有人给父母养老”。因此选项A是正确的。
文章第二段以意大利为例证明了国家工业化以后，人口出生率就会降低的观点。因此只有选项B是正确的。
文章第二段的叙述说明如今的意大利是一个工业化、低出生率的国家。因此选项C是正确的。
文章第三段第一句话告诉我们经济并不是唯一影响出生率的重要因素，这暗示了接下来会讲一些其他影响出生率的因素。文章以沙特阿拉伯为例就是为了证明这一点。因此选项B是正确的。
文章第四段后半部分讲到这些国家的政府采取措施为妇女提供更多的教育和机会来改善妇女的生活状况。因此选项D是正确的。

第10题：

共用题干
第二篇

In many of the developinlg countries in Africa and Asia,the population is growing fast.The reason for this is simple:Women in these countries have a high birth rate一from 3.0 to 7.0 children per woman.The majority of these women are poor,without the food or resources to care for their families.Why do they have so many children?Why don't they limit the size of the family?The answer may be that they often have no choice.There are several reasons for this.
One reason is economic.In a traditional agricultural economy,large families are helpful.Having more children means having more workers in the fields and someone to take care of the parents in old age.In an industrial economy,the situation is different. Many children do not help a family;instead,they are an expense.Thus,industrialization has generally brought down the birth rate.This was the case in Italy,which was industrialized quite recently and rapidly.In the early part of the twentieth century,Italy was a poor,largely agricultural country with a high birth rate.After World War Ⅱ,Italy's economy was rapidly modernized and industrialized.By the end of the century,the birth rate had dropped to 1.3 children per woman,the world's lowest.
However,the economy is not the only important factor that influences birth rate.Saudi Arabia, for example,does not have an agriculture-based economy,and it has one of the highest per capita incomes in the world.Nevertheless,it also has a very high birth rate(7.0).Mexico and Indonesia, on the other hand,are poor countries,with largely agricultural economies,but they have recently reduced their population growth.
Clearly,other factors are involved.The most important of these is the condition of women.A high birth rate almost always goes together with lack of education and low status for women.This would explain the high birth rate of Saudi Arabia.There,the traditional culture gives women little education or independence and few possibilities outside the home.On the other hand,the improved condition of womnen in Mexico,Thailand,and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education and opportunities for women.
Another key factor in the birth rate is birth control.Women may want to limit their families but have no way to do so. In countries where governments have made birth control easily available and inexpensive ,birth rates have gone down.This is the case in Singapore,Sri Lanka,and India,as well as in Indonesia,Thailand,Mexico,and Brazil.In these countries,women have also been provided with health care and help in planning their families.
These trends show that an effective programn to reduce population growth does not have to depend on better economic conditions. It can be effective if it aims to help women and meet theii needs.Only then,in fact,does it have any real chance of success.

In Mexico,Thailand,and Indonesia,the government________.
A:is not concerned about the status of women
B:has tried to industrialize the. country rapidly
C:does not allow women to work outside the home
D:has tried to improve the condition of women

答案：D
解析：
根据文章第二段我们知道“在传统的农业经济中，家庭成员多是十分有利的。孩子多就意味着田里的劳动力多，而且有人给父母养老”。因此选项A是正确的。
文章第二段以意大利为例证明了国家工业化以后，人口出生率就会降低的观点。因此只有选项B是正确的。
文章第二段的叙述说明如今的意大利是一个工业化、低出生率的国家。因此选项C是正确的。
文章第三段第一句话告诉我们经济并不是唯一影响出生率的重要因素，这暗示了接下来会讲一些其他影响出生率的因素。文章以沙特阿拉伯为例就是为了证明这一点。因此选项B是正确的。
文章第四段后半部分讲到这些国家的政府采取措施为妇女提供更多的教育和机会来改善妇女的生活状况。因此选项D是正确的。

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