【題目】Three million tons of coal ______ every year in the city.

A．is exploited B．are exploited

C．had exploited D．have exploited

【答案】B

【解析】句意：這個城市每年要用三百萬噸煤。主語中心語是tons，Three million和of coal都是修飾tons的，故謂語動詞用復(fù)數(shù)，煤是被用，表示被動，故選B項。

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