问题 单项选择题

女性患者,19岁。反复皮肤紫癜4个月。Hb 90g/L,WBC 3.4×109/L,PLT 40×109/L,中性粒细胞碱性磷酸酶积分增高,骨髓示粒系及红系细胞减少,巨核细胞全片1个,Ham试验阴性。

最可能的诊断是

A.阵发性睡眠性血红蛋白尿

B.再生障碍性贫血

C.巨幼细胞性贫血

D.白细胞不增多性白血病

E.脾功能亢进

答案

参考答案:B

单项选择题
单项选择题

Aspirin is one of the safest and most effective drugs invented by man. The most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild. It is also cheap.For millions of people suffering from arthritis, it is the only thing that works. Aspirin, in short, is truly the 20th-century wonder drug. It is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users.Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of tree barks and leaves which today are known to contain a chemical found in aspirin. During the 19th century, there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets were available in the United States.A small quantity of aspirin relieves pain and inflammation. It also reduces fever by affecting some of the body’’s reactions. Aspirin is very irritating to the stomach lining. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice.

A good title for this passage would be:________

A.Why Do We Take Aspirin

B.How Do We Take Aspirin

C.Aspirin: The Unknown Side Effects.

D.Aspirin: The Most Popular Medicine.