【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,許多動物的數(shù)量正在下降。由于時間狀語At present可知此處動詞表示的動作正在進行,用現(xiàn)在進行時態(tài)。the number of表示“的數(shù)量”,后跟復(fù)數(shù)名詞做主語時,謂語動詞要用單數(shù),所以C選項符合題意。A選項是一般現(xiàn)在時態(tài),B選項是一般過去時態(tài),D選項的結(jié)構(gòu)不正確。故答案選C。

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