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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Martin Cooper , a US researcher , was considered _______ the first cell phone .

A．invented

B．to invent

C．having invented

D．to have invented

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难度：未知

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He looked around and caught a man _____ his hand into the pocket of a passenger.

A．put

B．to be putting

C．to put

D．putting

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难度：未知

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They walked together as far as the second crossing ____ they parted .

A．when

B．which

C．why

D．where

题型：未知
难度：未知

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You may use my bike _____ that you return it by noon.

A．on condition

B．in condition

C．under condition

D． at conditions

题型：未知
难度：未知

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With all the problems ______, the manager left for home, _______.

A．solved, satisfied	B．to be solved, with satisfaction
C．being solved, satisfied	D．having been solved, with satisfaction

题型：未知
难度：未知

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