火邪具有的致病特点是
A．气血辨证B．阴阳辨证C．表里辨证D．虚实辨证E．寒热辨证
参考答案：A
等腰梯形的周长是80cm，它的中位线和腰长相等，梯形的高是8cm，那么梯形的面积是______．
－You _______ be happy with the strong public support you’ve received.
－Yes,you’re right.I’m really excited.
A．may
B．can
C．must
D．need
