Everyoneknowsthatisdangerousto

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更新 2022-09-03
科目英语
题型未知题型
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Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.

A．it; it

B．what; what

C．it; what

D．what, it

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Children’s brains can’t develop properly_______ they lack protein(蛋白质).

A．when

B．since

C．because

D．unless

题型：未知
难度：未知

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This is the very toy car ________ which he came here the other day.

A．by

B．in

C．for

D．on

题型：未知
难度：未知

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Spacecraft “Discovery” has failed in the course of launch.
----_______? They have been preparing for the test.

A．How come

B．When

C．How

D．Why not

题型：未知
难度：未知

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I began to fish before memory began, _______ I know I have always fished.

A．so far

B．so as far as

C．as far as

D．so

题型：未知
难度：未知

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Elbert Einstein, for ______ life had once been very hard, was successful later in science .

A．whom

B．whose

C．which

D．his

题型：未知
难度：未知

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