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根据下列短文，回答下列各题。
Climate．more than any other single factor，determines the distribution of life on earth．Cli-matic boundaries establish the limits which organisms can survive．Plants，even more than ani-mals．must be well adapted to climate in order to survive．They cannot move about or take shel-ter but must be equipped to endure whatever weather conditions are likely to Occur．In the harsh conditions of the tundra，for example，low growing mosses，lichens，and a few flowering plants allhug the ground for shelter from icy winds．

Animals，despite their ability to move about and find shelter，are just as much influenced　by climate as plants are．Creatures such as the camel and the penguin are so highly specializedthat they have an extremely limited distribution。Others，such as bears ar
According to the passage，plants on the tundra grow in the ground_________．
A.to avoid being eaten by arctic animals
B.because fertilizer is not readily available
C.to minimize exposure to the cold
D.because unfrozen water supplies are very scarce

试题出自试卷《2013年成人高考专升本《英语》考前预测试卷九》

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Directions：
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第63题答案为：
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第61题答案为：
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根据下列短文，回答下列各题。
Exercise，everyone advises!But immediately，when you try，you run into trouble．Thereis so much contradictory，sometimes in correct advice about exercising that become confused．Test yourself on the following true-false quiz．It tell you what you need to know．
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