第1题：
E
A rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below l6℃．Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate．Without the forest cover，these areas would reflect more heat into the atmosphere，warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns，potentially causing certain natural disasters all over the world．
In the past hundred years，humans have begun destroying rainforests in search of three major resources(资源)：land for crops，wood for paper and other products，land for raising farm animals．This action affects the environment as a whole．For example，a lot of carbon dioxide (二氧化碳)in the air comes from burning the rainforests．People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.
There are two main reasons for this．Firstly，when people cut down trees，generally they can only use the land for a year or two．Secondly，cutting large sections of rainforests may provide a good supply of wood right now，but in the long run it actually reduces the world’s wood supply．
Rainforests are often called the world’s drug store．More than 25％ of the medicines we use today come from plants in rainforests．However，fewer than l％of rainforest plants have been examined for their medical value．It is extremely likely that our best chance to cure diseases lies somewhere in the world’s shrinking rainforests．
72．Rainforests can help to adjust the climate because they ．
A．reflect more heat into the atmosphere
B．bring about high rainfall throughout the world
C．rarely cause the temperature to drop lower than l6℃
D．reduce the effect of heat from the sun on the earth
第2题：
In has been shown that children who smoke have certain characteristics.Compared with non-smokers they are more rebellious, their work deteriorates as they move up school, they are more likely to leave school early, and are more often delinquent and sexually precocious.Many of these features can be summarized as anticipation of adulthood.
There are a number of factors which determine the onset of smoking, and these are largely psychological and social.They include availability of cigarettes, curiosity, rebelliousness, appearing tough, anticipation of adulthood, social confidence, the example of parents and teachers, and smoking by friends and older brothers and sisters.
It should be much easier to prevent children from starting to smoke than to persuade adults to give up the habit once established, but in fact this has proved very difficult.The example set by people in authority, especially parents, health care workers, and teachers, is of prime importance.School rules should forbid smoking by children on the premises.This rule has been introduced at Summerhill School where I spent my schooldays.
There is, however, a risk of children smoking just to rebel against the rules, and even in those schools which have tried to enforce no smoking by corporal punishment there is as much smoking as in other schools.Nevertheless, banning smoking is probably on balance beneficial.Teachers too should not smoke on school premises, at least not in front of children
1、Which of the following is a common characteristic of young smokers?
A、Disobedience
B、Laziness
C、Lack of intelligence
D、Vanity
2、Which of the following is NOT true according to the passage?
A、Some children start to smoke out of curiosity
B、Many children start to smoke because they want to appear mature.
C、In order to have fewer children smokers, parents, teachers and health care workers should not smoke.
D、It is not as difficult to prevent children from starting to smoke as to dissuade adults from smoking.
3、The writer concludes that school rules to forbid smoking().
A、should be introduced, for it really works at the school where he once studied.
B、should not be introduced, for it may cause disturbance.
C、should be introduced though it may not work effectively.
D、needn't be introduced as long as teachers don't smoke in front of children.
4、The author's attitude towards his writing is().
A、objective
B、emotional
C、critical
D、indifferent
第3题：
On （平均），people who don’t smoke are healthier than people who do.
第4题：
第5题：
第6题：
On________ （平均），people who don’t smoke are healthier than people who do.
第7题：
It’s hard to give up __________(smoke), but you have to.
第8题：
Many people believe that Americans love their cars almost more than anything else. They are (21) about cars. Not only is the car the (22) means of transportation in the States, it has (23) become a "plaything". (24) the time youngsters become fourteen years old or even (25) , they're likely to start (26) of having their own cars.
In the USA, the (27) family, if the father is not (28) work, can afford to buy a new car every five years. However, many young people (29) after school in order to save money to buy a car. Learning to drive and getting a driver license may be one of the most exciting (30) of a young person's life. Driver (31) is one of the most popular courses. At the end of the course the student will (32) a driving test for a license. (33) many, that piece of paper means that they have grown up.
In the United States, many men and women (34) to have cars. People use cars to go to work. (35) drive cars to go shopping, to take the children to school or for other activities.
21.
A. crazy
B. careful
C. sure
D. worried
第9题：
第10题：