The animals, highly sensitive to pollution, can______monitors of water quality.A

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问题 The animals, highly sensitive to pollution, can______monitors of water quality.

选项 A、serve as
B、work for
C、make up
D、take on

答案 A

解析本题考查动词词组辨析。serve as意为“伺候，担当”；work for意为“为…工作”；make up意为“编造”；take on意为“呈现，承担”。根据句意，故选A。

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