按情景选择恰当的选项。

1. 当你告诉妈妈：“我早餐喜欢吃鸡蛋。”可以说： [ ]

A. I like eggs for lunch.

B. I like eggs for supper.

C. I like eggs for breakfast.

2. 别人对你表示感谢，你说：“不用谢。”可以说： [ ]

A. Sure!

B. Great!

C. You're welcome.

3. 你想知道面包圈多少钱一个，可以问：[ ]

A. How much for one donut?

B. What is your favourite food?

C. What's this?

4. 在商店里，你想问售货员：“这些橡皮是在廉价出售吗？”可以说：[ ]

A. May I borrow one eraser, please?

B. Are the erasers on sale?

C. I'll take two, please.

5. 你问妈妈这是谁的风筝，可以说：[ ]

A. Where is it?

B. Whose kite is this?

C. I like your kite.

6. 你想知道今天是星期几，可以问：[ ]

A. What's your favourite day?

B. What is it?

C. What day is it?

某部位黏膜受抗原刺激后，无抗原诱导的其他黏膜部位是否同样产生抗原活化细胞( )

A．同样产生
B．不产生
C．不一定
D．微量产生
E．以上都不是