【名词&注释】
虫媒传粉(insect pollination)
[单选题]柳属植物具柔荑花序，却为虫媒传粉，这是因为( )。
A. 柔荑花序是适应虫媒传粉的特征
B. 柳属的柔荑花序是原始性状，虫媒是次生性的
C. 花序类型与传粉方式无关
查看答案&解析
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举一反三：
[单选题]Which of the following is true?
A. The water in Texas have been reduced by 75%.
B. Most industries in the world suffer from water shortagers.
C. The underground water in Saudi Arabia might run out in 50 years.
D. Good management of water use resulted from the project in the Central Valley.
[单选题]Over the past 20 years, the Internet helped change our world in _____way or another for the better.
A. any
B. one
C. every
D. either
[单选题]52
A. old.
B. same
C. special
D. new
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