读对话，选择正确的答案。

Chen Jie: Hi, Mike! I have a new schoolbag.

Mike: Wow. How nice!

Chen Jie: Look, it is purple.

Mike: Mm-May I have a look?

Chen Jie: Sure.

Mike: Wow. So heavy! What's in it?

Chen Jie: Many books.

Mike: How many books do you have?

Chen Jie: Thirty story-books, twenty-three notebooks, two Chinese books and one math book.

1. What colour is Chen Jie's schoolbag?

A. Red.

B. Purple.

2. How many notebooks does Chen Jie have?

A. 31.

B. 23.

3. How many books does Chen Jie have?

A. Thirty-three.

B. Thirty.

4. What are books made of?

A. Paper.

B. Great!

下列乙类传染病需依法采取甲类传染病预防控制措施的是（）

A.病毒性肝炎

B.伤寒和副伤寒

C.淋病、梅毒

D.淋病、艾滋病

E.传染性非典型性肺炎