牛黄的功效是（）
A.息风止痉
B.化痰开窍
C.清肝明目
D.清热解毒
E.镇惊安神
参考答案：A, B, D
If someone invites you to go to his party, but you have no time, what should you not say?__________
A．Sorry, I can’t. I have to study for a test.
B．Sorry, I’m visiting my aunt.
C．I’d love to ,but I have no time.
D．No, thanks.
消化道出血时肠鸣音的变化是（）
A.肠鸣音正常
B.肠鸣音活跃
C.肠鸣音亢进
D.肠鸣音减弱
E.肠鸣音消失
