治疗休息痢日久，脾阳极虚，肠中寒积不化，遇寒即发者，应首选
A．连理汤 B．半夏泻心汤 C．乌梅丸 D．左金丸 E．温脾汤
参考答案：E
下列命题中，正确的命题个数是（ ）
①顶点在圆周上的角是圆周角；②圆周角度数等于圆心角度数的一半；
③90°的圆周角所对的弦是直径；④圆周角相等，则它们所对的弧也相等．
A．1个
B．2个
C．3个
D．4个
A computer can think logically and work millions and millions of times faster than a human but
it _____ never replace humans because it has to ________ to work. [ ]
A. may; be programmed
B. can; program
C. should; program
D. can; be programmed
