咸味药的作用是（）
A.能散能行
B.能泄能燥
C.能下能软
D.能收能涩
E.能补能和
参考答案：C
关子结肠癌的叙述，下列哪项是错误的
A．结肠癌大多数为腺癌
B．右半结肠癌临床常出现贫血
C．左半结肠癌临床常出现梗阻
D．结肠癌以血行转移为主
E．结肠癌中以乙状结肠发病率最高
In my opinion, what matters is not how much a present costs, _____what it means to you. [ ]
A. however
B. nor
C. either
D. but
