15．--I didn't ask for the name list．Why ______ on my desk？
--I put it there just now in case you needed it．（　　）
A．does it landB．has it landedC．will it landD．had it landed

分析 句意：-我沒有要過名單，為什么它出現(xiàn)在我的桌子上？-我剛剛放在這里的，以防你需要．

解答 答案：B． have/has done 表示過去發(fā)生的動作對現(xiàn)在的影響．根據(jù)句意，我沒有要過名單，為什么它出現(xiàn)在我的桌子上？說明名單"已經(jīng)"出現(xiàn)在我桌上，對現(xiàn)在的影響是"我感到驚訝"．故選B．

點(diǎn)評 時態(tài)的題目要結(jié)合具體的語境才能選擇出正確選項(xiàng)．

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