Read and choose. (读短文，回答下列问题)

     I am Bob. I'm from China. I study in No. 5 school. In my class, there are twenty boys and

seventeen girls. My teacher is Miss Zhang. I have many friends in my class. Nancy likes watermelons

very much. She doesn't like oranges. Jerry likes hot dogs very much. She is a fat girl. Lily likes grapes

and peaches. She doesn't like bananas. I like oranges but I don't like pears.

1. 一 How many girls are there in Bob's class?

    一 _____.          

A. Twenty      

B. Seventeen      

C. Three

2. 一 Who is Bob's teacher?

    一 _____.            

A. Miss Zhang    

B. Jerry        

C. Nancy

3. 一What does Jerry like?

    一_____.     

A. Oranges      

B. Hot dogs      

C. Pears

4. 一 Does Lily like grapes?

    一 _____.

A. We don't know  

B. No, she doesn't  

C. Yes , she does

5. Bob likes _____.

A. bananas    

B. watermelons      

C. oranges

防水混凝土中各类材料总碱量（Na₂O当量）不得大于（），氯离子含量不应超过胶凝材料总量的（）

A、3kg/m³、0.2%

B、3kg/m³、0.1%

C、2.5kg/m³、0.1%