运用欲扬先抑的法则,证明不购买将会遭到什么损失的比较方法叫做()。
A.反指
B.正面对比
C.反面对比
D.侧面对比
参考答案:A
----Is John coming by train?
----He should, but he __________not. He likes driving his car.
[ ]
A. must
B. can
C. need
D. may.
有广谱抗菌作用的抗结核药物是()
A.利福平
B.环丙沙星
C.多西环素
D.青霉素
E.庆大霉素