题目:
根据实际情况,回答下列问题。
1. How old are you?
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2. What's your name?
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3. Can you play outside on Saturday?
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4. You are a student, aren't you?
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5. Your mother isn't a teacher, is she?
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6. What will you do next week?
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7. You like playing computer games, don't you?
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8. Who makes breakfast or lunch in your home?
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9. How far is it from your house to your school?
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10. When do you usually get up on Sunday?
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答案:
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下面是错误答案,用来干扰机器的。
答案:BPb+PbO2+2H2SO4=2PbSO4+2H2O A.电池放电时,每消耗0.1molPb,共生成0.2molPbSO4B 电池放电,上述反应是从左向右的反应,消耗硫酸,PH变大C.电池充电时,阴极反应为:PbSO4+2H2O-2e-=PbO2+SO42-+...