淋巴细胞型类白血病反应最常见的致病原因是下列哪项（）

A.细菌感染

B.大面积烧伤

C.恶性肿瘤

D.寄生虫病

E.病毒感染

补全对话。

A:  1  

C: It's a cup.

A: A cup? It's very strange. I've never seen a cup with three legs.

C : yeah. It was used in the old days.

A:     2  

C: It was used for drinking wine.

A:    3    

C: It was made of metal.

B: Hmm. It's interesting.

A: Yeah. Look! There's a teapot in a

B:    4      

C: That's not a teapot. It was for serving wine.  The big bowl was used for keeping

the wine warm.

B:    5    

C : When the bowl was filled with hot water, the wine would get warm.

A: That's a good idea. Thank you, Mei Mei. I've learnt a lot about old Chinese

inventions today.

C: Me, too.

A. How did it keep wine warm?

B.What was it made of?

C.What's that thing with three leg , Mei Mei?

D.What was it used tor?

E. What was the cup used for?

1.            2.           3.           4.           5.