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GRE阅读题目解析:植物的叶子

2017-03-23 09:54:00来源:网络

  P4

  1

  It is one of nature‘s great ironies that the availability of nitrogen in the soil frequently sets an upper limit on plant growth even though the plants‘ leaves are bathed in a sea of nitrogen gas.

  即便植物的叶子浸没在氮气的海洋中,植物生长从土壤中获取氮元素却经常有上限,这是自然界最大的矛盾的一。

  2

  The leguminous plants — among them crop plants such as soybeans, peas, alfalfa, and clover — have solved the nitrogen supply problem by entering into a symbiotic relationship with the bacterial genus Rhizobium.

  豆科植物 —— 包括大豆,豌豆,苜蓿,车轴草 —— 通过与 R 菌(根瘤菌)建立一种共生关系,解决了氮的吸收问题。

  10. Which of the following situations is most closely analogous to the situation described by the author as one of nature‘s great ironies?

  (A) That of a farmer whose crops have failed because the normal midseason rains did not materialize and no preparations for irrigation had been made

  (B) That of a long-distance runner who loses a marathon race because of a wrong turn that cost him twenty seconds

  (C) That of shipwrecked sailors at sea in a lifeboat, with one flask of drinking water to share among them

  (D) That of a motorist who runs out of gas a mere five miles from the nearest gas station

  (E) That of travelers who want to reach their destination as fast and as cheaply as possible, but find that cost increases as travel speed increases

  选 C

  选类比。

  文段中的矛盾是,大气中有海量的氮而植物不能利用,只能从土壤中吸收且有上限。与之类似的是船难过后水手在救生艇上,只有一瓶饮用水,四周的海水都不能喝(喝了会肾衰竭)。

  以上就是新东方在线GER频道为你带来的GRE阅读题目解析:植物的叶子,更多精彩敬请关注新东方在线GRE频道。

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