高考英语科普阅读的方法与实例(2)
68. The holly plant has more spines on the lower leaves because most animals________. A. are not tall enough B. like the lower leaves only C. are not clever enough D. can get the lower leaves easily
68. The holly plant has more spines on the lower leaves because most animals________.
A. are not tall enough B. like the lower leaves only
C. are not clever enough D. can get the lower leaves easily
69. To defend themselves, oak trees use________.
A. chemical means B. physical means
C. bitter chemicals D. sandy materials
70. How does tobacco protect itself against an attack from a caterpillar?
A. Its leaves fight against the attack by physical means.
B. Its roots send a messenger to discourage the caterpillar.
C. Its roots increase the production of nicotine when it is attacked.
D. Its leaves produce poisonous sand to drive the caterpillar away.
71. What would be the best title for this passage?
A. Plants and Animals B. How Plants Defend Themselves
C. Attacks and Defenses D. How Animals Eat Plant Leaves
【答案与解析】本文主要介绍一些植物是如何通过物理和化学的方式保护自己不受外界侵害的。
68. D。事实细节题。根据第2段最后一句the lower leaves are easier for most animals to reach可知答案。
69. B。推理判断题。根据第3段中的oak tree, have thick and hard leaves that are difficult for animals to eat可推知，又厚又硬的树叶属于植物自我保护的物理手段。
70. C。推理判断题。根据第四段可知，tobacco保护自己不受毛虫侵害的办法是产生更多的nicotine。
71. B。主旨概括题。因为整篇文章都在讲植物是怎样保护他们自己的，故选B。
六、模拟训练
A
Walk through the Amazon rainforest today and you will find it is steamy, warm, damp and thick. But if you had been around 15, 000 years ago, during the last ice age, would it have been the same? For more than 30 years, scientists have been arguing about how rainforests like the Amazon might have reacted (反应) to the cold, dry cli-mates of the ice ages, but until now, no one has reached a satisfying answer.
Rainforests like the Amazon are important for mopping up CO2 from the atmos-phere and helping to slow global warming. Currently the trees in the Amazon take in around 500 million tons of CO2 each year: equal to the total amount of CO2 giving off in the UK each year. But how will the Amazon react to future climate change? If it gets drier, will it still survive and continue to draw down CO2? Scientists hope that they will be able to learn in advance how the rainforest will manage in the future by understanding how rainforests reacted to climate change in the past.
Unfortunately, getting into the Amazon rainforest and collecting information are very difficult. To study past climate, scientists need to look at fossilized pollen, kept in lake muds. Going back to the last ice age means drilling deep down into lake sediments(沉淀物) which requires specialized equipment and heavy machinery. There are very few roads and paths, or places to land helicopters and aero planes. Rivers tend to the easiest way to enter the forest, but this still leaves vast areas between the rivers com-pletely unsampled (未取样). So far, only a handful of cores have been drilled that go back to the last ice age and none of them provide enough information to prove how the Amazon rainforest reacts to climate change.(责任编辑：www.360gaokao.com)
特别说明：由于各方面情况的不断调整与变化，360高考网所提供的所有考试信息仅供参考，敬请考生以权威部门公布的正式信息为准。如有出入，欢迎大家予以指正！
【挑错 】【推荐】【打印】
更多关于“招生新闻的”内容
