If a substance is dissolved when heated, it may______a gas at the same time.

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问题 If a substance is dissolved when heated, it may______a gas at the same time.

选项 A、give off
B、give over
C、give in
D、give away

答案A

解析 动词词组辨析题。give off意为“散发,释放”;give over意为“托付,交托”;give in意为“屈服,退让”;give away意为“送掉,分发(奖品)”等。根据句意选择A。
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