Every chemical change either results from energy being used to produce the chang

游客2023-09-06  24

问题 Every chemical change either results from energy being used to produce the change, or causes energy to be______ in some form.

选项 A、given off
B、put out
C、set off
D、used up

答案 A

解析 题意是:每次化学变化或者来源于能量被用来产生这种变化,或者促使能量以某种形式而被______。  [A] given off“释放,发出”,符合题意。  [B] put out“熄灭,扑灭”,[C]setoff“出发,启程”,[D]used up“用完,用光”都与题意不符。
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