题目内容
All too often, a choice that seems sustainable(可持续的)turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol(乙醇) for fuel from corn. Corn is a renewable resource —you can harvest it and grow more, almost limitlessly. So replacing gas with corn ethanol seems like a great idea.
One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that’s not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land –including, in some cases, rain forest in places such as Brazil—into farmland, which in turn gives off lots of carbon dioxide (CO) into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far that it might not help.
You cannot really declare any practice “sustainable” until you have done a complete life-cycle analysis of its environmental(环境的) costs. Even then, technology and public keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainably requires plenty of thought on an ongoing basis.
1.What might directly cause the loss of the forest according to the text?
A. The growing demand for energy to make ethanol
B. The increasing carbon dioxide in the air
C. The greater need for farmland
D. The big change in weather.
2.The underlined word “it” in the second paragraph refers to “ ”
A. the energy benefit B. the forest loss
C. climate change D. burning ethanol
3.The author thinks that replacing gas with corn ethanol is .
A. impractical B. acceptable C. admirable D. useless
4.What does the author mainly discuss in the text?
A. Technology B. Sustainability
C. Ethanol energy D. Environmental protection
1.C
2.A
3.A
4.B
【解析】
试题分析:作者主要谈论的是可持续性发展的判断依据以及用相关一些事实来进行佐证其论点。
1.C推理判断题。注意问的是直接原因。That result leads to turning the fallow land — including, in some
cases, rain forest in places such as Brazil — into farmland(这个结果会导致一些休闲地<在一些情况下,包括位于巴西等地的热带雨林>被转化为农场)。
2.A词义猜测题。根据上下文可知是指能源优势。
3.A推理判断题。根据全文可知作者认为用corn代替gas是不符合实际的,会带来很多意想不到的问题。
4.B主旨大意题。读完全文我们可以知道,作者主要谈论的是可持续性发展的判断依据以及用相关一些事实来进行佐证其论点。该题容易误选D。
考点:议论文类阅读理解
In Canada you can find dogs, cats, horses, etc. in almost every family. These are their pets. People love these pets and have them as their good friends. Before they keep them in their houses, they take them to animal hospitals to give them injections(注射) so that they won’ t carry disease. They have special animal food stores, though they can get animal food in almost every kind of store. Some people spend around two hundred Canadian dollars a month on animal food. When you visit people’ s houses, they would be very glad to show you their pets and they are very proud of them. You will also find that almost every family has a bird feeder in their garden. All kinds of birds are welcomed to come and have a good meal. They are free to come and go and nobody is allowed to kill any animal in Canada. They have a law against killing wild animals. If you killed an animal, you would be punished. If an animal happened to get run over by a car, people would be very sad about it.
People in Canada have many reasons to like animals. One of them might be: Their family ties are not as close as ours. When children grow up, they leave their parents and start their own life. Then the old will feel lonely. But pets can solve this problem. They can be good friends and never leave them alone.
1.The passage mainly talks about ________ .
A.how to keep disease from pets |
B.pets in Canada |
C.how to take good care of pets |
D.life of the old in Canada |
2.In Canada, children leave their parents when they grow up because _____ .
A.they don’ t love their parents any more |
B.they can only find jobs far from their parents |
C.their parents’ houses are too small |
D.they wouldn’t depend on their parents any more |
3.Which of the following is TRUE?
A.People buy animal food only at the animal food stores. |
B.Pets eat better than people. |
C.Almost every family has a birdcage in his house. |
D.Any bird can come to the bird feeders to eat. |