【题目】Penicillin(青霉素)was first _______ by Fleming early in the twentieth century.
A.inventedB.discoveredC.createdD.produced
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【题目】After a long walk, the old man ________ be tired now.
A.canB.mustC.shouldD.need
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【题目】幸亏有你,我们才没有在森林里迷路。(完成译句)
________ ________ you, we didn't get lost in the forest.
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【题目】Please don’t make so much noise. The baby________in the next room.
A.sleepsB.is sleepingC.sleptD.will sleep
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【题目】The mother bought the toy car her son looked forward to ________ (satisfy) him. Soon the boy no longer felt sad.
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【题目】All passengers________ through the safety check before they take a plane.
A.mustB.canC.need
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【题目】Health is on the top of my list. Nothing is .
A.importantB.more importantC.the most important
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【题目】Most young people find __________ exciting to watch a football match.
A.itB.thisC.thatD.one
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