阅读理解。

1. Who is helping protect the environment?

A. Mrs. Gao            

B. Mr. Xu          

C. Miss Gao        

D. Mr.Lu

2.  When can people go to visit the old people in the old people’s home?

A. On Monday.        

B. On Wednesday.    

C. On Friday.      

D. On Saturday.

3. What does the second piece of news call on people to do?

A. To stay with the poor.  

B. To visit old people.

C. To help the poor.

D. To collect rubbish.

心电图示宽大畸型的QRS波群，其前无P波，代偿间歇完全，心电图诊断为（）

A.房性早搏

B.室性早搏

C.房颤

D.室颤

E.结性早搏