问题
单项选择题
女，20岁。乏力、食欲减退半年。骨髓象示增生明显活跃，红细胞系统明显增生，幼红细胞40%，细胞体积增大，染色质疏松，细胞质量丰富，细胞核发育落后于细胞质。最可能的病因是（）。
A.溶血性贫血
B.巨幼细胞贫血
C.缺铁性贫血
D.急性失血性贫血
E.慢性再生障碍性贫血
答案
参考答案：B
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女，20岁。乏力、食欲减退半年。骨髓象示增生明显活跃，红细胞系统明显增生，幼红细胞40%，细胞体积增大，染色质疏松，细胞质量丰富，细胞核发育落后于细胞质。最可能的病因是（）。
A.溶血性贫血
B.巨幼细胞贫血
C.缺铁性贫血
D.急性失血性贫血
E.慢性再生障碍性贫血
参考答案：B
| 阅读短文，完成各题。 | ||
the water. He thinks it is another (其他，另一个) dog. That dog also has a large piece of meat in his mouth. He says to himself, " I want to get his meat. Then I can have two pieces. " He opens his mouth to bark (吠，叫) and his meat goes down (落下) into the water. 根据短文内容，判断句子对(√)错(×)。 ( ) 1. There is a dog with a large piece of meat in his mouth. ( ) 2. He sees another dog in the water, but he doesn't know it's only himself. ( ) 3. He thinks the dog in the water is himself. ( ) 4. At last (最终) he eats two pieces of meat. 选词填空。
6. _____________ the water he looks _____________ and sees himself in the water. 7. That dog also has a large piece _____________ meat in his mouth. |