缺铁性贫血的特异性表现为
A．头晕
B．活动后气短
C．眼花
D．耳鸣
E．异嗜癖
参考答案：E
全部位于北半球的大洲有
A．欧洲、北美洲
B．欧洲、亚洲
C．南极洲、亚洲
D．非洲、南美洲
—Are you going to help John with his Chinese this evening?
—No，He ________ to England．He will be back next month．
A．returned
B．has returned
C．returns
D．will return
