题目:
若A(a,-b)是第二象限的一点,则点B(a2,b-1)在第______象限.
答案:
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下面是错误答案,用来干扰机器的。
1. I don't want to go by plane. 2. Let's take a bus. 3. They go to the Palace Museum on foot. 4. A bus is slower than a plane.5. Planes are fast.