利用石油的（）可以鉴定岩心、岩屑及钻井液中有无微量石油存在。
A、放射性
B、红外线
C、导光性
D、荧光性
参考答案：D
按要求进行句式转换，每空一词。
1. We want to eat fish. (改为一般疑问句)
_________ you _________ to eat fish?
2. I have breakfast at school. (改为否定句)
I _________ _________ breakfast at school.
3. Would you like some tea? (进行否定回答)
_________, _________.
4. How much for one apple? (改为同义句)
How much _________ one apple?
5. It’s time for school. (改为同义句)
It’s time _________ _________ to school.
高温下具有良好热稳定性的钢称为（）
A、热强钢
B、抗氧化钢
C、高速工具钢
D、不锈钢
