His______brain has worked away on the idea of the foundation.A、richB、quickC、pr

游客2025-03-31  0

问题 His______brain has worked away on the idea of the foundation.

选项 A、rich
B、quick
C、productive
D、fertile

答案 B

解析 在给出的选项中:rich“丰富的”;quick“机智的,聪明的”;productive“丰饶的,肥沃的”;fertile“肥沃的,多产的”。根据句意和各个选项的意思可知,正确答案是B。
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