下列疾病中,骨髓有核红细胞出现“核老浆幼”现象的是()
A.巨幼细胞贫血
B.急性红血病
C.骨髓增生异常综合征
D.缺铁性贫血
E.再生障碍性贫血
参考答案:D
A great many women were ________ by the advertisement that they could lose weight by wearing the
slim dress. [ ]
A. taken on
B. taken up
C. taken in
D. taken off
牛肉生产国发生旱灾,牛肉供应急剧下降。消费者转向将猪肉作为牛肉的替代品,因为他们认为这两种肉都对健康有益。在牛肉市场上,这两种现象用供给和需求来表示就是()
A.需求曲线向左移动
B.供给曲线向左移动
C.需求曲线向右移动
D.供给曲线和需求曲线都会向左移动