Emergency line operators must always___calm and make sure that they get all the information they need to send help.
A．growB．a(chǎn)ppear
C．becomeD．stay
D
stay意為“保持”,stay calm表示“保持冷靜,鎮(zhèn)定”。根據(jù)所提供的情景“make sure that they get all the information they need to send help”可判斷出急救中心的接線員必須保持鎮(zhèn)靜,確保得到他們需要的全部信息,以便派送人們進(jìn)行救護(hù)。grow 意為“漸漸變得”；appear 意為“顯得,好像”；become 意為“變成,成為,轉(zhuǎn)為,變得”。
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