It is everywhere,as visible as it is vilified.From car parts to crisp packets,plastic has suffuse the Earth,and beyond-in 1969 Neil Armstrong planted a nylon Stars and Stripes on the moon.More than 8

题目
It is everywhere,as visible as it is vilified.From car parts to crisp packets,plastic has suffuse the Earth,and beyond-in 1969 Neil Armstrong planted a nylon Stars and Stripes on the moon.More than 8bn tonnes has been produced since the 1950s,enough to wrap the continents in cling film four times over.1 Untold tonnes end up as irretrievable ocean flotsam,which sunlight and salt fragment into microscopic pieces that attract toxins and may be gulped by creatures that become seafood Plastic weighs heavily on the mind,too.2 In Britain hatred of plastic unites the right-wing Daily Mail,the leftie Guardian,and the queen,who has banned plastic straws from her castles.But hold on.The little scientists know about plastic suggests that although it is the most noticeable pollutant it is far from the most harmful.Using less is at best a partial solution.a bet-ter answer is to collect more-especially in Asia The effects of plastic on nature and human health are hard to gauge.Most polymers are chemically inert.That makes them durable.3 It also makes them less likely to be a health risk to humans and beasts.As a pollutant,their impact is much lower than less tangible menaces.By one estimate,the environmental and social costs of plastic run to 9 139bn a year,chiefly from the greenhouse gases produced in its production and transport.The figure for farming is$3trn.Fertiliser run-off alone causes S 200bn-800bn worth of damage to the ocean,compared with S 13bn from plastic marine litter.Then look at the alternatives.A cotton tote bag must be used 131 times before its carbon footprint improves on that of a throwaway carrier bag This does not stop plastic from being a problem.4 Prohibition makes sense in poor places like Bangladesh and Kenya that lack proper waste-management systems.It is less useful in tidy France where rubbish collection works smoothly.It would be more effective for rich countries to shore up their recycling industries.They may have little choice in any case A carbon tax may spur recycling,which is less energy-intensive than producing virgin plastic Mandating minimum recycled content in plastic containers,as California has since 1991,is also a useful tool.Governments could exempt second-hand polymers from value-added tax;after all,the tax has already been paid on the fresh source material 5.Among the ten biggest plastic polluters,all but two are in developing Asia.Together,they account for two-thirds of the plastic spewed into the ocean.Of these,only China could afford Western-style waste-management in the near future.Others are just waking up to the problem;before plastic began piling up,it reasonably seemed less of a priority for governments.Bangladesh may be able to copy India which,despite its 1.3bn people,falls outside the top ten thanks to armies of ragpickers.The rest,like Vietnam or Thailand,may be too wealthy for raddiwallahs,yet too poor for sophisticated rubbish collection.The rich world should focus its attention-and resources,including charity-on chivvying them along.That is the surest way to stem the plastic tide
4选?

A.But bans and penalties on plastic bags in rich countries may be better for the conscience than for the environment

B.But by itself,the West will not solve the problem

C.It also makes them less likely to be a health risk to humans and beast

D.For some 79%of the plastic produced over the last 70 years has been thrown away,either into landfill sites or into the general environment

E.Nine in len Europeans wory about ts impat on eosystems thre in four fret that it can harm their own health
F.Only 9%was recydled 60%was dumped,mosty in aills s too often in the natural word
G.Researdn shows he wi De more pasic han tsh by weignt n he wold's oceans by 2050 and srawns are a major lador because the vast maoiy are never eydlede
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相似问题和答案

第1题:

Text 2 To understand how astrology works, we should first take a quick look at the sky. Although the stars are at enormous distances, they do indeed give the impression of being affixed to the inner surface of a great hollow sphere surrounding the earth. Ancient people, in fact, literally believed in the existence of such a celestial sphere. As the earth spins on its axis, the celestial sphere appears to turn about us each day, pivoting at points on a line with the earth's axis of rotation. This daily turning of the sphere carries the stars around the sky, causing most of them to rise and set, but they, and constellations they define, maintains fixed patterns on the sphere, just as the continent of Australian maintains its shape on a spinning globe of the earth. Thus the stars were called fixed stars.

The motion of the sun along the ecliptic is, of course, merely a reflection of the revolution of the earth around the sun, but the ancients believed the earth was fixed and the sun had an independent motion of its own, eastward among the stars. The glare of sunlight hides the stars in daytime, but the ancients were aware that the stars were up there even at night, and the slow eastward motion of the sun around the sky, at the rate of about thirty degrees each month, caused different stars to be visible at night at different times of the year.

The moon, revolving around the earth each month, also has an independent motion in the sky. The moon, however, changes its position relatively rapidly. Although it appears to rise and set each day, as does nearly everything else in the sky, we can see the moon changing position during as short an interval as an hour or so. The moon's path around the earth lies nearly in the same plane as the earth's path around the sun, so the moon is never seen very far from the ecliptic in the sky. There are five other objects visible to the naked eye that also appear to move in respect to the fixed background of stars on the celestial sphere. These are the planets Mercury, Venus, Mars, Jupiter, and the Saturn. All of them revolve around the sun in nearly the same plane as the earth does, so they, like the moon, always appear near the ecliptic. Because we see the planets from the moving earth, however, they behave in a complicated way, with their apparent motions on the celestial sphere reflection both their own independent motions around the sun and our motion as well.

第26题:The ancient people believed that ________.

[A] the earth was spinning on the axis of the sky

[B] the sky was a hollow sphere spinning around the earth

[C] the patterns of stars on the sky would never change

[D] the stars around the sky were not stationary


正确答案:C
根据第一段最后两句话,我们可以看出古人认为是地球的转动带动了群星的转动,而事实上群星在天空中是恒定的。于是,正确答案应为C。

第2题:

It is not advisable to use nylon for alongside towing because it ______.

A.is too expensive for everyday towing usage

B.binds on the cleats

C.parts too readily

D.stretches too much


正确答案:D
使用尼龙绳进行旁拖是不可取的因为尼龙绳伸展性太强。

第3题:

E)任务型阅读(共5小题,计10分)

阅读下面的短文,根据短文内容,完成表格。(每空填1至3个词)

China has decided to stop the use of free plastic bags. Supermarkets, shops and outlets(经销店) in China can’t offer plastic bags any more.

Every year, people use too many plastic bags. They throw them here and there after they have used them. The government has done its best to deal with them but failed. While we offer quick service(服务) to customers, the plastic bags pollute water,earth and air, and they waste the oil. The government asks people to go back to carry cloth bags and use baskets when they go to buy something. The cloth bags and the baskets can be used again and again.

Many months have passed. The environment has been improved a lot.

Action

Make a decision to stop the use of 41.

42.

Supermarkets, shops and outlets

Advantage

Offer43. service to customers

Disadvantage

Pollute water, earth and air and waste44.

What should we do

Go back to carry cloth bags and use 45.

41.__________


正确答案:
free plastic bags    

第4题:

共用题干
So Many"Earths"
The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

The new finding is based on a thorough study of 170,000 stars in the Milky Way.
A:Right
B:Wrong
C:Not mentioned

答案:B
解析:
第二段第一句表明,近来的机械故障使开普勒太空望远镜不再为我们服务,通篇并没有提到开普勒太空望远镜为我们服务了多少年,所以选择C项。
第二段最后一句表明,开普勒太空望远镜主要关注与地球有相似环境的星球,所以选择A项。
第三段第二句表明,可以让生命存在的星球的直径至少要和地球的直径一样大,但不会超过地球直径的两倍。由此不难推断出其应该不比地球小,所以选择B项。
第三段第三、四句表明,适合人类居住的星球必须与它所环绕的恒星有一个适于居住的距离,以保证星球表面的温度能够允许液态水的存在。地球不仅适合人类居住,而且还绕着太阳运行。由此可知,题干表述正确。
第四段第一句表明,该项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析,所以选择B项。
第五段第一句表明,研究人员承认这项评估是粗糙的,即不精确的,所以选择A项。
文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

第5题:

共用题干
So Many"Earths"
The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

The Kepler space telescope has been in service for 15 years.
A:Right
B:Wrong
C:Not mentioned

答案:C
解析:
第二段第一句表明,近来的机械故障使开普勒太空望远镜不再为我们服务,通篇并没有提到开普勒太空望远镜为我们服务了多少年,所以选择C项。
第二段最后一句表明,开普勒太空望远镜主要关注与地球有相似环境的星球,所以选择A项。
第三段第二句表明,可以让生命存在的星球的直径至少要和地球的直径一样大,但不会超过地球直径的两倍。由此不难推断出其应该不比地球小,所以选择B项。
第三段第三、四句表明,适合人类居住的星球必须与它所环绕的恒星有一个适于居住的距离,以保证星球表面的温度能够允许液态水的存在。地球不仅适合人类居住,而且还绕着太阳运行。由此可知,题干表述正确。
第四段第一句表明,该项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析,所以选择B项。
第五段第一句表明,研究人员承认这项评估是粗糙的,即不精确的,所以选择A项。
文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

第6题:

protective blanket 选择

The atmosphere again acts  our protective blanket on _____

[A] stars

[B] sun

[C] earth

[D] space

 


选C
act as“充当、起……作用”;act for“代表、代理”;act on“按照”。本句意为大气层起到保护伞的作用。

第7题:

共用题干
So Many"Earths"
The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

The planet that could support life might be a little bit smaller than the Earth.
A:Right
B:Wrong
C:Not mentioned

答案:B
解析:
第二段第一句表明,近来的机械故障使开普勒太空望远镜不再为我们服务,通篇并没有提到开普勒太空望远镜为我们服务了多少年,所以选择C项。
第二段最后一句表明,开普勒太空望远镜主要关注与地球有相似环境的星球,所以选择A项。
第三段第二句表明,可以让生命存在的星球的直径至少要和地球的直径一样大,但不会超过地球直径的两倍。由此不难推断出其应该不比地球小,所以选择B项。
第三段第三、四句表明,适合人类居住的星球必须与它所环绕的恒星有一个适于居住的距离,以保证星球表面的温度能够允许液态水的存在。地球不仅适合人类居住,而且还绕着太阳运行。由此可知,题干表述正确。
第四段第一句表明,该项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析,所以选择B项。
第五段第一句表明,研究人员承认这项评估是粗糙的,即不精确的,所以选择A项。
文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

第8题:

A

When you look at the sky at night,the moon looks bigger than the stars. In fact,the moon is much smaller than the stars.It is much smaller than the earth. But the moon is much closer to us than any star. That is why it looks so big. If you hold a coin close.to your eye,it looks big.If you look at it across the room,it looks small.The moon moves around the earth. It makes one trip in about four weeks. The moon looks flat(扁的)to us. But it is a round ball,like the earth.People once thought the moon had fire(火) on it. They thought the fire made it bright.Now we know the moon is like a mirror( 镜子 ). It gets its light from the sun Our sunlight comes from the sun,too: What is the sun? The sun is star. The stars we can see have their own light. There are many big stars we can-t see. Their light has burned out. Others are still bright,but they are so far away that we can-t see them. The sun looks bigger and much brighter than other stars because it is the nearest of all stars. The sun and the other stars we see are very hot,but the air around us saves us from(使------免于) the heat(热量) of the sun.The sun gives us light and warmth.It makes plants grow and leaves turn green. It makes life possible on our earth.It is a life-giving star.

( )21. The moon looks bigger because__________ .

A. some stars are smaller than it

B.it is between the sun and the earth

C.it is the closest to the earth

D.it is very bright


正确答案:C
.21.C 【解析】由第一段中。But the moon is much closer to us than any star.打可知。

第9题:

共用题干
So Many"Earths"
The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

The Earth is a planet orbiting in the Sun's habitable zone.
A:Right
B:Wrong
C:Not mentioned

答案:A
解析:
第二段第一句表明,近来的机械故障使开普勒太空望远镜不再为我们服务,通篇并没有提到开普勒太空望远镜为我们服务了多少年,所以选择C项。
第二段最后一句表明,开普勒太空望远镜主要关注与地球有相似环境的星球,所以选择A项。
第三段第二句表明,可以让生命存在的星球的直径至少要和地球的直径一样大,但不会超过地球直径的两倍。由此不难推断出其应该不比地球小,所以选择B项。
第三段第三、四句表明,适合人类居住的星球必须与它所环绕的恒星有一个适于居住的距离,以保证星球表面的温度能够允许液态水的存在。地球不仅适合人类居住,而且还绕着太阳运行。由此可知,题干表述正确。
第四段第一句表明,该项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析,所以选择B项。
第五段第一句表明,研究人员承认这项评估是粗糙的,即不精确的,所以选择A项。
文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

第10题:

共用题干
So Many"Earths"
The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.

The estimate of the number of planets that could support life is not very accurate.
A:Right
B:Wrong
C:Not mentioned

答案:A
解析:
第二段第一句表明,近来的机械故障使开普勒太空望远镜不再为我们服务,通篇并没有提到开普勒太空望远镜为我们服务了多少年,所以选择C项。
第二段最后一句表明,开普勒太空望远镜主要关注与地球有相似环境的星球,所以选择A项。
第三段第二句表明,可以让生命存在的星球的直径至少要和地球的直径一样大,但不会超过地球直径的两倍。由此不难推断出其应该不比地球小,所以选择B项。
第三段第三、四句表明,适合人类居住的星球必须与它所环绕的恒星有一个适于居住的距离,以保证星球表面的温度能够允许液态水的存在。地球不仅适合人类居住,而且还绕着太阳运行。由此可知,题干表述正确。
第四段第一句表明,该项新评估源于对超过4.2万颗星球的分析,而非源于对17万颗星球的分析,所以选择B项。
第五段第一句表明,研究人员承认这项评估是粗糙的,即不精确的,所以选择A项。
文章第一段指出,这次的调查结果是新的发现,但通篇文章并未提到这是对可能有生命存在的星球的首次研究。

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