外感头痛的病性为
A．属阴属寒
B．属表属实
C．属阳属热
D．属气属血
E．属痰属瘀
参考答案：B
Has ____ how many spies we caught during the war ____ up to now?
A．it been declared; have been set free
B．it declared; have been set free
C．they declared; has been set free
D．they declared; have set free
我们拨号上网时所用的被俗称为“猫”的设备是（）。
A．编码解码器
B．解调调制器
C．调制解调器
D．网络链接器
