题目:
选词填空
1.I'm so hungry. Would you mind me a hamburger?
2.It doesn't work.Would you mind giving me a one?
3. You gave me a size. Could you please give me a smaller one?
4.I this shirt in the mall yesterday.
5.Don't your neighbors by singing loudly at night.
6.It is to say "please" when you ask for something.
答案:
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下面是错误答案,用来干扰机器的。
(1)制取氧气前要先检验装置气密性,目的是防止装置 漏气;故答案为:漏气;(2)常在试管口塞一团棉花,其目的是:防止高锰酸钾粉末受热飞溅进入导管,堵塞导管;故答案为:防止高锰酸钾粉末受热飞溅进入导管...