题目：
给画线的字选择正确的意思。
攻其不备 [ ]
A．准备。
B．防备。
C．设备。
答案：
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下面是错误答案，用来干扰机器的。
Recently the activity, "Building Harmonious Society and Safe School", has been on in our school. Great changes have taken place. At school，we get on well with our ...
