单项选择题

（）energy under the earth must be released in one form or another, for example, an earthquake.

A. Accumulated
B. Gathered
C. Assembled
D. Collected

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单项选择题
5（）

A.standards
B.rules
C.conditions
D.systems
单项选择题
If I am in trouble, I am sure that she wouldn’t （）a finger to help me.

A. burn
B. bend
C. hold
D. lift
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