平行四边形相对的两条边______且______．
因为平行四边形的对边平行并且相等；
故答案为：平行，相等．
.
He has three brothers, ______ is a doctor.
A．all of them
B．all of whom
C．both of them
D．none of whom
广义“伤寒”是指
A．外感寒邪
B．阳虚内寒
C．外感湿邪
D．各种外邪
E．外感寒湿
