( )是世界上最具影响力的能源产品交易所，上市的品种有原油、汽油、取暖油、天然气、

将下列句子变为否定句。

1. I have lunch at school.

    I ______ ______ lunch at school.

2. We watch TV in the evening.

    We ______ ______ TV in the evening.

3. They play football after school.

    They ______ ______ football after school.

4. Lucy and Lily like music.

    Lucy and Lily ______ ______ music.

妊娠妇女不宜针刺的部位是（）。

A.头颈部

B.肩背部

C.腰部

D.骶部

E.腹部

短时记忆信息容量是无限的。

试述凌志CS400轿车自动空调系统故障码的读取及消码方法？

耳硬化中影像学检查均无异常。