It was when Asimov was eleven years old ________ his talent ________ writing became obvious.

A. when; for                 B. that; on                    C. that; for                   D. /; on

C

【解析】這題考查強(qiáng)調(diào)句和介詞:第一空填that是強(qiáng)調(diào)句,強(qiáng)調(diào)時間狀語when Asimov was eleven years old第二空填for,talent for“…的天賦”,句意是:就是在Asimov11歲時,他的寫作天賦顯現(xiàn)出來了。選C。

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