【題目】At present the number of many animals ________.

A. drops B. dropped

C. is dropping D. is dropped

【答案】C

【解析】解析:句意:目前,許多動(dòng)物的數(shù)量正在下降。由于時(shí)間狀語(yǔ)At present可知此處動(dòng)詞表示的動(dòng)作正在進(jìn)行,用現(xiàn)在進(jìn)行時(shí)態(tài)。the number of表示“的數(shù)量”,后跟復(fù)數(shù)名詞做主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞要用單數(shù),所以C選項(xiàng)符合題意。A選項(xiàng)是一般現(xiàn)在時(shí)態(tài),B選項(xiàng)是一般過(guò)去時(shí)態(tài),D選項(xiàng)的結(jié)構(gòu)不正確。故答案選C。

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