10.Our planet Earth is comparatively small,with only about 24,902miles around the equator(赤道).Its surface area may seem largest at 196,935,000sq.miles,but of this,70% is covered by sea.The actual land surface covers some 57,500,000sq.miles-29% of the total surface area.
Once again,this seems vast until we take into account the largely uninhabited(未居住的) regions such as the huge wastes of the Arctic and Antarctic,the deserts and wetlands.These regions are not always totally uninhabited,but they can usually support only very small populations.
At present there is still enough space on Earth for humans and wildlife,but what of the future?Our world cannot grow any larger,yet the human population keeps growing every year!As of July 2008,there were almost 6.7billion(十億) people on the planet,and current estimates(估計) suggest that the population could be as high as 9.1billion by as soon as 2050.
While the birthrate is slowing a little in parts of the Northern Hemisphere,in many other parts of the world,including developing countries,populations continue to grow.This population explosion is responsible for most world environmental problems today; so whether our main concern is to breathe cleaner air,to drink purer water,to eliminate(消除) pollution,to protect wildlife and countryside,to produce more food to eat or to reach a higher standard of living generally,our chances of achieving any of these things become faint as the population increases sharply.The Earth's resources are vast but limited.We have a tendency to look to the shortterm,rather than seeing the bigger picture of the future.
This is why it is so important that young people learn about looking after the planet-so that future generations of adults act responsibly with regard to the environment and create a future that is continuable,both for humans and all the other species with which we share our world.
59.What does the author worry about?C.
A.How to find ways to live in uninhabited regions.
B.The Earth is turning smaller and smaller.
C.Whether there is enough space for creatures in the future.
D.What people will live on in the future.
=60.According to the text,we can infer thatA.
A.the population will increase by 0.6billion every ten years
B.the birthrate around the equator is a little low
C.population explosion is caused by environmental problems
D.more population brings more resources
61.What does the underlined word"faint"mean?B.
A.Important.B.Slight.C.Necessary.D.Interesting.
62.Which of the following ideas is suggested by the author?C.
A.Taking strong measures to control the birthrate.
B.Saving the Earth's natural resources.
C.Calling on the young to care for the planet.
D.Protecting the endangered species.
分析 本文屬于說明文閱讀,作者通過這篇文章主要向我們描述了作者擔(dān)心未來是否有足夠的生物空間,號召年輕人愛護(hù)地球.
解答 59.C.細(xì)節(jié)理解題.根據(jù)第三段:At present there is still enough space on Earth for humans and wildlife,but what of the future?Our world cannot grow any larger,yet the human population keeps growing every year可知作者擔(dān)心未來是否有足夠的生物空間;故選C.
60.A.推理判斷題.根據(jù)第三段:As of July 2008,there were almost 6.7billion(十億) people on the planet,and current estimates(估計) suggest that the population could be as high as 9.1billion by as soon as 2050可知.人口將增加0.6billion每十年;故選A.
61.B.詞義理解題.根據(jù)倒數(shù)第二段:our chances of achieving any of these things become faint as the population increases sharply可知我們獲得這些東西的機(jī)會變得微弱的人口的急劇增加;意為微弱;故選B.
62.C.推理判斷題.根據(jù)最后一段:adults act responsibly with regard to the environment and create a future that is continuable,both for humans and all the other species with which we share our world可知作者號召年輕人愛護(hù)地球;故選C.
點(diǎn)評 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個人的主觀想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.