If plastic and rubber are burnt, they’ll______poisonous gases.

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问题 If plastic and rubber are burnt, they’ll______poisonous gases.

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

答案D

解析 句意:如果燃烧塑料和橡胶,它们就会释放出有毒气体。give up放弃;交出。givein屈服;让步;交上。give away放弃;泄露;分发。give off发出(光,气味等)。塑料和橡胶燃烧会散发气味,故选D。
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