下列岩石中，哪一种可以找到化石？[ ]
A、花岗岩
B、玄武岩
C、变质岩
D、砂岩
答案：D
按要求改写句子。
1. That is an English bus. (改为复数句子)
_____ _____ English _____.
2. They are English jeeps. (改为单数句子)
3. Those are maps. (改为一般疑问句, 并作否定回答)
—_____ _____maps?
—No, _____ _____.
4. David is in his room. (对划线部分提问)
_____ _____ David?
5. That's OK. (变为同义句)
That's _____ _____.
转化环境
