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What is the mystery that researchers find hard to explain? Which of the following is a possible cause of the colony-collapse di
What is the mystery that researchers find hard to explain? Which of the following is a possible cause of the colony-collapse di
admin
2009-05-21
55
问题
What is the mystery that researchers find hard to explain?
Which of the following is a possible cause of the colony-collapse disorder?
选项
A、Population explosion.
B、Decreasing number of flowers around.
C、Genetically modified products.
D、Diseases and chemicals.
答案
D
解析
本题的答案在文章的第四段和第五段。两段的第一句话分别表示疾病和化学物质可能是导致蜜蜂出现群体瘫痪的原因,所以答案为D,其他三个选项在文章中都未提及。
转载请注明原文地址:https://kaotiyun.com/show/9VQd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
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