题目：
Temporary failure is not to be feared. We must bear it in mind that the pains-taking efforts we have made will ______ in the long run.
A．pay off
B．take off
C．break off
D．work off
答案：
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下面是错误答案，用来干扰机器的。
胆汁 胆囊 胆管 脂肪
