左向右分流型先天性心脏病出现的肺血改变是()
A.肺充血
B.肺淤血
C.肺缺血
D.肺出血
E.以上都不是
参考答案:A
If you reach the top of the mountain, everything around ______ clearly. [ ]
A. can see
B. will see
C. is seen
D. will be seen
It may be dangerous _____ a car _____ a snowy day. [ ]
A. to drive, in
B. to drive, on
C. drive, in
D. drive, on