问题 单项选择题

下列关于破伤风的叙述,哪项是正确的

A.是非特异性感染
B.临床症状和体征主要是溶血毒素所致
C.典型症状是肌紧张性收缩
D.伤口的厌氧菌培养是诊断依据
E.注射破伤风抗毒素是预防破伤风的最可靠方法

答案

参考答案:C

解析:[解释] 破伤风是由破伤风杆菌所致的一种特异性感染。该细菌所产生的痉挛毒素是引致病人一系列l临床症状和体征的主要原因。典型症状是在肌紧张性收缩的基础上,阵发性强烈痉挛。诊断主要靠临床表现。伤口厌氧菌培养很难发现。破伤风是可以预防的疾病。创伤后早期彻底清创,改善局部循环是预防该病发生的关键。通过人工免疫的方法,产生较稳定的免疫力。

阅读理解

The Winter Olympics is also called the White Olympics.At this time,many colorful stamps are published to mark the great Games.The first stamps marking the opening came out on January 25th,1932 in the United States for the 3rd White Olympics. From then on,publishing stamps during the White Olympics became a rule.

During the 4th Winter Olympic Games a group of stamps were published in Germany in November l936. The five Olympics rings were drawn on the front of the sportswear.It was the first time that the rings appeared on the stamps of the White Olympics.

In the 1950s,the stamps of this kind became more colorful.When the White Olympics came,the host countries(主办国) as well as the non-host countries published stamps to mark those Games.China also published four stamps in February 1980 when the Chinese sportsmen began to take part in the White Olympics.

Japan is the only Asian country that has ever held the White Olympics.Altogether 14,500 million stamps were sold to raise money for this sports meeting.

Different kinds of sports were drawn on these small stamps.People can enjoy the beauty of the wonderful movements of some sportsmen.

小题1:The White Olympics and the Winter Olympics_________.

A.are the same thing

B.are different games

C.are not held in winter

D.are held in summer小题2:The world made it a rule to publish stamps to mark the great world games_______.

A.after the year 1936

B.after the 3rd White Olympics

C.before the 3rd White Olympics

D.before the year 1932小题3:Which of the following is TRUE?

A.Only the host countries can publish stamps to mark those Games.

B.Only the non-host countries can publish stamps to mark those Games.

C.All the countries can publish stamps to mark those Games.

D.Japan can’t publish stamps to mark those Games小题4:What may appear on the stamps of the White Olympics?

A.Basketball.

B.Table tennis.

C.Football.

D.Skating.

单项选择题