Eat less food _______ you want to put on weight .
A.if
B.unless
C.until
D.as soon as
答案:B
. The drunk driver is for the traffic jam yesterday.
A.to blame; occurred
B.to blame; occurring
C.to be blamed; occurred
D.to be blamed; occurring
下列哪些为法洛四联症的特点( )
A.收缩期杂音
B.发绀
C.杵状指(趾)
D.可见剑突下抬举性搏动
E.肺动脉狭窄越重,杂音越明显