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2013高考英语二轮高效抢分训练32
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  • 资源类别试题
    资源子类二轮复习
  • 教材版本不限
    所属学科高中英语
  • 适用年级高三年级
    适用地区全国通用
  • 文件大小1015 K
    上传用户秦志东
  • 更新时间2013/3/19 13:51:21
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阅读下列短文,从每题所给的A、B、C和D项中,选出最佳选项。
A
If you travel to a new exhibit at the San Francisco Conservatory of Flowers, you will have chances to see some meateating plants. Take bladderworts, a kind of such plant, for example. They appear so small and grow in a quiet pond. But these are the fastestknown killers of the plant kingdom, able to capture a small insect in 1/50 of a second using a trap door!
Once the trap door closes on the victim, the enzymes(酶) similar to those in the human stomach slowly digest the insect. When dinner is over, the plant opens the trap door and is ready to trap again.
Meateating plants grow mostly in wet areas with soil that doesn’ t offer much food value. In such conditions, these amazing plants have developed insect traps to get their nutritional needs over thousands of years.North America has more such plants than any other continent.

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