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题文

---It’s said that scientists are working hard to ________ a way to deal with H7N9 avian influenza(H7N9禽流感)
---Really? That’s great!

A.caught up with B.come up with C.agreed with D.compared with
科目 英语   题型 单选题   难度 中等
知识点: 主语+系动词+表语
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