Experts say it is an international trend...

Experts say it is an international trend to __________ MP2.5 to check air quality.

A．adapt

B．attach

C．adopt

D．adjust

C 【解析】本题考查动词词义辨析。句意：专家们说采用MP2.5检查空气质量是国际趋势。adopt采取;采纳;收养

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