下列哪种先天性心脏病可出现原发性左心衰竭
A.法洛四联症
B.动脉导管未闭
C.房间隔缺损
D.肺动脉瓣狭窄
E.右位心
参考答案:B
He is going to build a team that has a lot of potential and he thinks that is ____ excites him.
A.that
B.which
C.what
D.as
以下()不是衡量程序质量的标准。
A.设计质量高
B.加工效果好
C.通用性强
D.使用指令多