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3．Salt，great quantities of which in industrial production，was only used as humans'food in ancient times．（　　）

A．

was used

B．

were used

C．

is used

D．

are used

分析大量用于工業生產的鹽，在古代只被用作人類的食物．

解答 D 考查時態，本句是一個非限制性定語從句，先行詞是salt，但是定語從句的主語是great quantities，所以謂語動詞用復數形式，又因為是被動關系所以be used 結構．根據句意：大量用于工業生產的鹽，在古代只被用作人類的食物．用于工業生產指的是現在，所以用一般現在時，故答案選D．

點評動詞時態的考點是近幾年高考試題考查的重中之重．各地高考試題對動詞時態的考查越來越側重于語境化、交際化的理解，這加大了試題的難度，沒有明確的時間狀語，這就要求考生對句子的語境進行正確的判斷，從而選出正確的時態．

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