Scientists are trying their best to ways to treat the terrible disease called H7N9. A.

Scientists are trying their best to　　　　　ways to treat the terrible disease called H7N9.

A. come up with B. look forward to

C. talk about D. give up

答案

A。考查短语动词辨析。句意: 科学家们正在尽最大努力想出治疗被称为H7N9的严重疾病的办法。come up with想出; look forward to盼望; talk about谈论; give up放弃。故选A。

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