娱乐场所提供娱乐服务项目和出售商品，应当明码标价，并向消费者出示价目表。

简要说明对“教师主导与学生主体相统一的规律”的认识。

目前市售的USBFLASHDISK(俗称U盘)是一种( )。

A．( 显示设备

B．( 输入设备

C．( 存储设备

D．( 输出设备

用括号里的词汇和短语填空

1. Don't ________ to turn off the gas when you finish cooking.

2. Three years ___________ since Tom came to China.

3. Is everything ________ the party. Our friends are coming soon.

4. If you feel uncomfortable, __________ see a doctor?

5. _______ I'm free, I won’t go swimming. It's too cold.

引起酸痛的原因是

A．牙本质过敏

B．急性牙髓炎

C．慢性牙髓炎

D．急性根尖周炎

E．牙周炎

如何调整客户信用额度？