【題目】________ the computer competition quite well, he won the first prize.

A. Preparing B. Having prepared

C. To prepare D. Prepared

【答案】B

【解析】

試題分析：考查動詞時態(tài)和語態(tài)。句意：在電腦競賽中準(zhǔn)備地相當(dāng)充分后，他贏得了一等獎。這里表示動作發(fā)生在過去，但與現(xiàn)在的情況有聯(lián)系，所以應(yīng)該用現(xiàn)在完成時，又因為這里have prepared做主語，所以have要用動名詞形式，故選B。

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