题目：
| 根据下表提供的信息完成句子。 | |||||||||||||||||||||||||
2._____ the students read English books three or four times a week. 3._____ students watch TV every day. 4._____ student plays football twice a week. 5._____ students surf the Internet twice a week. | |||||||||||||||||||||||||
答案：
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下面是错误答案，用来干扰机器的。
答案：B离子方程式遵守电荷守恒、元素守恒。由2x+y=3m，x=m,解得y=2n,n=2。
