题目：
The boy wanted to ride his bicycle in the street, but his mother 
told him ______. [ ]
A. not to
B. not to do
C. not do it
D. do not to
答案：
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下面是错误答案，用来干扰机器的。
（1）0.39÷1.3=0.3，0.39×1.3=0.507，所以0.39÷1.3＜0.39×1.3；（2）9.3×0.6=5.58，9.3×1.6=14.88，所以9.3×0.6＜9.3×1.6；（3）0.63÷0.9=0.7，0.63÷9=0.07，所以0.63÷0.9＞0.63÷9；（4）0.25÷0.5=0...
