胃、十二指肠溃疡急性穿孔最常见的是A．十二指肠球部前壁B．十二指肠球部后壁C．胃幽门

阅读理解。

     People call the Winter Olympics the White Olympics. At this time, they publish (发行) many stamps to

mark (标志) the great games. The first stamps came out on January 25th, 1932 in the United States for the

3rd White Olympics. From then on (从那时起), publishing stamps during the White Olympics became a rule.

     During the 4th Winter Olympics, people published a group of stamps in November 1936. They drew five

rings of Olympics. It was the first time that the rings appeared (出现) 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 as well as 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.

     In Asia, Japan was the only country to hold the White Olympics. They sold 14,500 million stamps during

the Olympics.

     People drew different kinds of sports on these small stamps, and they enjoyed the wonderful sports and

some excellent players.

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

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

3. The Winter Olympics is held (被举行) once ____. 

A. every two years

B. every three years

C. every four years

D. every five years

4. 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.

5. What may appear (出现) on the stamps of the White Olympics?

A. Basketball.

B. Table tennis.

C. Football.

D. Skating.

蛋白质一级结构与功能关系的特点是（）。

A.相同的氨基酸组成的蛋白质功能一定相同

B.一级结构相近的蛋白质其功能类似性越大

C.一级结构中任何氨基酸的改变其生物活性即消失

D.不同生物来源的同种蛋白质其一级结构相同

企业的应付账款确实无法支付的，报经批准后，转作( )。

A．营业外收入

B．其他业务收入

C．未分配利润

D．资本公积

慢性骨髓炎手术治疗的目的，不包括（）。

A.消灭窦道

B.取出大片状死骨

C.消灭死腔

D.关闭伤口

E.查明致病菌

通过跖管的神经是（）

A.桡神经

B.尺神经

C.正中神经

D.腓浅神经

E.胫后神经