The gas has not fully burned when it is ______ from the cylinder.

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问题 The gas has not fully burned when it is ______ from the cylinder.

选项 A、injected
B、projected
C、rejected
D、ejected

答案D

解析 形近易混词辨析。这四个选项的词性都是动词,其中injected表示“注射,注入”;projected表示“设计,计划,投射,放映”;rejected表示“拒绝,抵制,否决”;ejected表示“逐出,撵出,驱逐,喷射”,根据题意,气体只能是喷射出来,所以选择ejected。
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