气的上升不及、下降太过引起病理变化为A．气陷 B．气滞 C．气逆 D．气闭 E．气脱

已知实数abc＞0，那么关于x的不等式ax²+bx+c＜0的解集可能为______．（写出所有正确命题的序号）①（-2，-1）②（-2，1）③（1，2）④（-∞，-3）∪（1，+∞）

My mother _______ me a computer as a birthday present next year.

A．gives

B．will give

C．gave

D．has given

白马非马

百日咳抗菌治疗，首选（）

A.青霉素

B.氯霉素

C.红霉素

D.复方磺胺甲恶唑

E.氨苄青霉素

·Look at the ten statements for this part.
·You will hear a passage about "

Who First Started to Smoke

Nicot wrote a book on all his discoveries about tobacco.

A．Right

B．Wrong

C．Not Mentioned