beekeepern.养蜂人 insecticiden.杀虫剂7ekspE5ti:zdai5vE:sitip
专门知识,专长注释:
2. the United States Department ofAgriculture Bee Research Laboratory:美国农业部蜜蜂研究实验室。
练习:
A Honeybeesare flying all across the country.
C Honeybees are leaving their hives and do not return.
2. Why are researchersseriously concerned with the phenomenon of colony-collapsedisorder?
B Becausehoneybees feed on flowers.
D Both B and C.
A Worsening environment.
C Dwindlingnumber of flowers around.
4. According to the fifth paragraph,which of thefollowing about bees genes istrue?
B Beesgenes help keep them in their hives.
D Beesgenes couldexplain the collapse of some colonies.
A Farmers apply certain chemicals to killunwanted bees.
C The insecticide affects the honeybees memory.
答案与题解:
2. A 短文第二段的第一句提供了答案。蜜蜂传播花粉能使植物结果,因此为人类提供食物。
4. D 第六段的句子:beesgenes could explain why some colonies have coilapsed andothcrs have not。这是选择D的依据。选项A、B、C的内容文章中都没有出现,所以不是答案。
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