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问题 单项选择题

植物群落可以净化空气，下列解释错误的是（）

A、监测有毒物质

B、富集有毒物质

C、分泌抗生素

D、降解有毒物质

答案

参考答案：A

单项选择题 A1型题

炒花椒炒制的程度是（）

A.表面呈黄色

B.呈油亮光泽

C.有焦斑

D.透出辛辣气味

E.发泡鼓起
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单项选择题

We wish to express our satisfaction at this to the Special Committee, their activities deserve encouraged.

A. whose activities will deserve to be encouraged.
B. their activities deserve to be encouraged.
C. whose activities should deserve being encouraged.
D. their activities deserve to be encouraging.
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