问题
选择题
Emergency line operators(接线员) must always _____ calm and make sure that they can get all
the information they need to send help.
A．grow
B．remain
C．appear
D．look
答案
答案：B
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Emergency line operators(接线员) must always _____ calm and make sure that they can get all
the information they need to send help.
A．grow
B．remain
C．appear
D．look
答案：B