交际用语，选择最佳答案，并将其标号填入题前的括号内。

1. —"Whose shorts are these?"

    —" ____."

A. I don't know

B. it's his shorts

C. I'm short

D. He's short

2. —"Would you like a cup of tea?" 

    —"____. I'd like a cup of coffee."

A. Yes, please

B. No, thanks

C. No, thank you

D. No, thank

3.—"Have a good trip!"

   —"____."

A. That's all right

B. Thank you

C. You're welcome

D. Have a good trip, too

4.—"____?" 

  —"I need a postcard, please."

A. What do you want

B. What do you do

C. Can I help you

D. What are you doing

5. —"Don't run in the train, Danny." 

   —"____."

A. Sure

B. I'm sorry

C. It's great

D. Let's jump

6. —"When do you leave for Japan?" 

    —"____."

A. On January 21st

B. In January 1st

C. By train

D. With my parents

不属于非特异性感染病原体的是 （）

A.大肠杆菌

B.结核杆菌

C.金黄色葡萄球菌

D.乙型溶血性链球菌

E.铜绿假单胞菌