肺心病合并右心衰竭，最突出的临床问题是（）。

A.缺氧

B.右心室扩大

C.房性心律失常

D.血液黏度增高

E.少尿

词汇运用， 用括号内所给的单词的适当形式填空。

1. I like my new shoes. _____ (it) are brown.    

2. My jeans are purple , and hers _____ (be) pink .

3. —Are the _____ (library) big and nice?

     —Yes.

4. Would you _____ (drink) another glass of water ?

5. He is good at _____ (swim).

6. Why not _____ (have)a cup of tea?

7. Helen _____  (not get ) up at six every day .

8. —Can I go to play basketball now, Mum?

    —Sorry. You must do your homework _____ (one).  

9. They are _____  (they)coats. Pleases put _____ (they) on the bed.

10. On Sundays, I often do some _____ (clean) with my mother.