单选题
We all know that in a situation like this a cool head is______.
A、
called for
B、
called off
C、
called on
D、
called up
【正确答案】
A
【答案解析】
解析：本题考查词组。called for“要求”；called off“取消”；called on“号召”；calledup“召唤”。根据题意，此处应填called for，表示“被需求”。故答案为A。
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