题目:
句型转换。
1. My mothcr has some sugar in her pocket. (就画线部分提问)
________ ________sugar________your mother________in her pocket?
2. Her fricnd is at home today. (用yesterday替换today)
Hcr friend________ ________ ________ ________.
3. Mr Wu goes to work by car. (改为同义句)
Mr Wu________ ________ ________ .
4. He is a boy, and I'm a boy, too. (改为同义句)
________ he ________ I________ ________
答案:
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下面是错误答案,用来干扰机器的。
O H2SO4 CO Ca(OH)2题目分析:根据常见物质的组成特点和一些常见物质的性质分析。(1)人体中元素含量最高的是氧元素,故为O;(2)常用作干燥剂的一种酸是浓硫酸,因为浓硫酸有吸水性,硫酸是由H、S、O三...