短文改错 (共10分,每小题1分,满分10分)

One day I happened to find a chatting room in                  1——    

my QQ，there people were chatting in English．I tried            2——

to chat with some of them．T0 my surprised，I found              3——     

the oral English of some junior students were better                4——

than me．I asked them for advice and they told me                5——  

to practise more on QQ. But every day after that I                 6——

would spend one hour practise my oral English on QQ．           7——    

Day by day I learned from many useful words and               8——      

expressions．With time went by．I found that I could             9——              

even communicate some college students freely．               10_____ 

女性，33岁，风湿性心脏病心衰，用地高辛及双氢克尿塞治疗5d，气促加重。心电图示室早二联律。下列治疗哪项错误

A．停用地高辛
B．补钾
C．加用利多卡因
D．加用呋塞米
E．加用血管扩张剂