【題目】________ into use in April 2012, the hotline was meant for residents reporting water and heating supply breakdowns.
A.Putting
B.Put
C.Having put
D.Being put

【答案】B
【解析】考查動詞語態(tài)。句意：在2012年4月份被投入使用,這個熱線電話是為了居民報告用水和熱氣的供應(yīng)中斷。是考察非謂語動詞的用法,首先要明確put into use和hotline是主動關(guān)系還是被動關(guān)系,熱線電話是被投入使用,所以是被動關(guān)系,只有選項(xiàng)B和D是被動關(guān)系,但是D表示正被使用,與題意不符，故選B項(xiàng)。

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