249.Ahastaughtuswhatatomsarema

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更新 2022-09-03
科目英语
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249. A_____ has taught us what atoms are made up of and how powerful the atom bomb is.

A．seaman

B．salesman

C．naturalist

D．Scientist

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75. When on holidays, the railways put on _____ trains to make people’s travel more convenient.

A．regular

B．special

C．particular

D．Unusual

题型：未知
难度：未知

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76. All flights _______ called off because of the terrible weather, they had to go there by train.

A．were

B．had been

C．being

D．having been

题型：未知
难度：未知

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77. --- Have all the important letters been delivered at the first time?
--- I’m sorry. _______ only 40% of them.

A．It is

B．They are

C．There are

D．It has been

题型：未知
难度：未知

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78. --- You _____ repay this debt this week according to the agreement.
--- Don’t worry. I _______ pay it off before the deadline.

A．must; will	B．shall; must
C．should; am due to	D．shall; am bound to

题型：未知
难度：未知

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79. Ming and Qing tombs have ______ relatively undamaged. They, ______, have suffered some damage from centuries of exposure, wars and deliberate destruction.

A．left; nevertheless	B．been remained; however
C．survived; though	D．excited; yet

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难度：未知

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