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【单选题】
A、They can prove the climate change clearly.
B、They are very important in the food chains.
C、They play a leading role in reducing global warming.
D、They are growing and flowering much faster than before.
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根据网考网移动考试中心的统计,该试题:
6%
的考友选择了A选项
79%
的考友选择了B选项
6%
的考友选择了C选项
9%
的考友选择了D选项
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