He ______that he could create live fish out of chemicals.A、demandedB、assertedC

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问题 He ______that he could create live fish out of chemicals.

选项 A、demanded
B、asserted
C、argued
D、announced

答案 B

解析考查动词辨析。demand“需要，请求”；assert“坚持，声称，断言”；argue“争论，辩论”；announce“宣布，通告”。句意：他坚持认为他可以用化学物品培育出活鱼来。故选B。

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