会引起左心室负荷增加的先心病有
A．室间隔缺损
B．房间隔缺损
C．动脉导管未闭
D．肺动脉狭窄
E．法洛四联症
参考答案：A,C
. It’s true that he did write some excellent poems, but he is ______ known as a playwright.
A．more
B．rather
C．better
D．much
工程项目公开招标的第一个环节是____________。
A．编制工程标底
B．布招标公告
C．投标申请人资格预审
D．发出招标邀请函
