题型:单项选择题 女,22岁,颈前肿物3个月。查体:右叶甲状腺可触及一质硬结节,直径2cm。同侧颈淋巴结可及2个,质中,活动。B型超声:甲状腺右叶一低回声实性团块。为明确肿物良恶性,下列各项检查,首先应选择()。A.同位素扫描B.血清降钙素测定C.针吸细胞学检查D.颈部软组织显像E.右侧颈淋巴结活检 查看答案
题型:单项选择题 关于百日咳下列哪种说法不正确()A.阵发性痉挛性咳嗽,终止时伴有鸡鸣样吼声B.是由百日咳杆菌引起的急性呼吸道传染病C.病程长,咳嗽可持续2-3个月D.颜面浮肿、球结膜下出血或鼻衄E.多发生于儿童 查看答案
题型: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 crashing the tablets in milk or orange juice.Aspirin was invented in ______.A.the 20th centuryB.the 19th centuryC.ancient GreeceD.ancient Germany 查看答案