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GRE阅读模拟在线练习附答案一百

2018-07-22 17:52:00 来源:新东方在线

  想要提高GRE阅读的整体水平,大家还是需要利用套题来复习,这样能够让大家从整体上把握自己的考试时间,同时也有利于大家更好的查找自己在备考中的不足,下面就是详细的内容整理。

点击查看》》》【GRE阅读真题在线练习附答案汇总】

  The plant called the scarlet gilia can have either red or white flowers. It had long been thought that hummingbirds, which forage by day, pollinate its red flowers and that hawkmoths, which forage at night, pollinate its white flowers. To try to show that this pattern of pollination by colors exists, scientists recently covered some scarlet gilia flowers only at night and others only by day: plants with red flowers covered at night became pollinated; plants with white flowers covered by day became pollinated.

  Which of the following, if true, would be additional evidence to suggest that hummingbirds are attracted to the red flowers and hawkmoths to the white flowers of the scarlet gilia?

  A.Uncovered scarlet gilia flowers, whether red or white, became pollinated at approximately equal rates.

  B.Some red flowers of the scarlet gilia that remained uncovered at all times never became pollinated.

  C.White flowers of the scarlet gilia that were covered at night became pollinated with greater frequency than white flowers of the scarlet gilia that were left uncovered.

  D.Scarlet gilia plants with red flowers covered by day and scarlet gilia plants with white flowers covered at night remained unpollinated.

  E.In late August, when most of the hummingbirds had migrated but hawkmoths were still plentiful, red scarlet gilia plants produced fruit more frequently than they had earlier in the season.

  正确答案:D

  以上就是关于“GRE阅读模拟在线练习附答案一百”的内容,更多精彩内容,请关注GRE频道!


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