-When did he.to bed yesterday?- .A. By the time his mother came back B. Not until his mother came backC. Until his mother came back D. Since his mother came back B [解析]句意:--昨天他几点去睡觉的?--直到他的母亲回来.这题目和参考答案——青夏教育精英家教网——

题目内容

（题文）—When did he，to bed yesterday?

— .

A. By the time his mother came back B. Not until his mother came back

C. Until his mother came back D. Since his mother came back

B 【解析】句意：——昨天他几点去睡觉的？——直到他的母亲回来。这里句子的完整回应答是He didn’t go to bed until his mother came back。Not...until...表示直到……才；根据题意，故选B。

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Many of the poisons in e-waste find their way into the environment. An environmental group has found the air, the earth and the rivers in Guiyu badly polluted.

Luckily, the Chinese government wants to change the situation (情况) . This year, China passed a new environmental protection law. Computer companies like Lenovo and Dell will be asked to take back their old computers. Hopefully, the problem with e-waste will be solved in the near future.

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A. France B. Japan C. Germany D. Australia

2.The underlined word “buried” probably means ____in the passage.

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A. is the e-capital of the world B. has serious e-waste pollution

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A. closed some computer companies B. asked people to hand in old computers

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volunteers from all over the world are helping survivors rebuild their homes.

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