男性，2岁，近期发现贫血。体检：中度贫血貌，脾肋下3cm。实验室检查：Hb80g/L，MCV65fl，网织红细胞10%。红细胞渗透脆性降低。其母有贫血史。根据上述情况，推测其血红蛋白电泳的检查结果最可能是下列哪一组（）
A.HbA为零或存在，HbA220%～95%
B.HbA为零或存在，HbF20%～80%，HbA2量可减低、正常或增高
C.HbA2>3.2%，HbF1%～6%，其余为HbA
D.HbA97%，HbA2<3.2%，HbF<1%
E.HbF20%～95%
参考答案：B
解析：根据临床表现该患者最大的可能是患珠蛋白生成障碍性贫血，血红蛋白电泳的检查结果最可能是HbA为零或存在，HbF20%～80%，HbA2量可减低、正常或增高。
| 完形填空。 | ||||
| A rich American went into a shop in London. He wanted very much to 1 a nice-looking watch. He saw a watch and liked it so much 2 he decided to buy it. But the owner of the shop 3 five hundred dollars for it. 4 the American was 5 whether to buy it or not, a young man suddenly came into the shop, took the 6 out of the owner's hand and ran out. It all 7 in a few seconds. When the owner ran out 8 the street, the young man was already 9 among the people. The American went 10 . At the next corner, he saw the young man 11 the stolen watch in his hand. "Do you want to buy a fine watch, sir?" he said in a low voice, "it's 12 a hundred dollars." "The young man doesn't know 13 I saw him stealing the watch just now," he 14 . The American paid at once and went 15 back to his room with the watch. His friend took a 16 at the watch and started 17 immediately. He said, "You are 18 . This watch isn't worth 19 ten dollars. I'm 20 the shop owner and the young man planned all this together." | ||||
|