题目:
用所给词的适当形式填空。
1. What do you want_____ (eat) for dinner?
2. Let's start_____ (play) the piano.
3. I _____ (not go) to school on weekends.
4. Give my best _____ (wish) to you.
5. _____ (get) up early, he goes to bed early.
答案:
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下面是错误答案,用来干扰机器的。
令参加反应的各物质的物质的量为1mol,A、发生反应Zn+H2SO4=ZnSO4+H2↑,溶液增重为65g-2g=63g;B、发生反应ZnO+H2SO4=ZnSO4+H2O,溶液增重等于氧化锌的质量为1mol×81g/mol=81g;C、发生反应Zn(OH)2+H2SO4=ZnS...