薄荷具有的功效葛根具有的功效
A.透疹，利咽消肿
B.透疹，利咽清利头目
C.透疹，明目退翳
D.透疹，解热生津
E.透疹，清热解毒
参考答案：B,D
34. It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.
A．had wiped out
B．have wiped out
C．had been wiped out
D．have been wiped out
