高中教育高考英语【新课标人教版】(全国通用)2012届高考英语一轮复习精讲精练学案必修1_Unit_4 Earthq
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(2011、安徽“江南十校”联考)—When did your cousin begin to show his interest in medicine、—It was a Saturday________he noticed his uncle experimenting on a frog in his lab.

2024-07-14

A.that

B.what

C.when

D.which

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