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【题目】Emergency line operators must always ________ calm and make sure they get all the information they need to send help.

A.stayB.becomeC.appearD.grow

【答案】A

【解析】

考查动词。句意:紧急电话接线员必须保持冷静,确保他们得到了需要发送帮助的所有信息。A. stay保持;B. become变得;C. appear出现;D. grow成长。分析句子可知,此处表示保持冷静。结合选项,故选A

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