问题 单项选择题

下述导致十二指肠溃疡胃酸分泌异常的因素中哪项不正确()。

A.对进餐刺激后的胃酸分泌在溃疡活动期增强

B.胃酸反馈性抑制机制失灵

C.壁细胞对刺激物敏感性增强

D.晚间胃酸分泌明显增多

E.胃排空减慢

答案

参考答案:B

完形填空

Mark Twain,an American writer, published more than 30 books, hundreds of

short stories and essays and gave lectures around the world throughout his career. 

Mark Twain left school when he was twelve. He had little school education. Thou

gh he had little school education, he became the most famous writer of his time

. He made millions of dollars by writing. His real name was Samuel Langhorne Cl

emens, but he is better known all over the world as MarkTwain, his penname. 

Mark Twain was born in 1835 and he was not a healthy baby. In fact, he was not

expected to live through the first winter. But with his mother's tender care,

he managed to survive. As a boy, he causedmuch trouble for his parents. He use

d to play jokes on all of his friends and neighbors. He didn't like to go to sc

hool, and he constantly ran away from home. He always went in the direction of

the nearby Mississippi. He was nearly drowned nine times. After his father's d

eath in 1847, Mark twain began to work for a printer, who only provided him wit

h food and clothing. Then, he worked as  a river-boat pilot (领航

员)and later joinedthe army. But shortly after that he became a miner. During t

his period, he started to write short stories. Afterwards he became a full-time

writer.

In 1870, Mark Twain got married. In the years that followed he wrote many books

including Tom Sawyer in 1876, and Huckleberry Finn in 1884, which made him fam

ous, and brought him a great fortune. Unfortunately, Mark Twain got into debts

in bad investments(投资) and he had to write

large numbers of stories to pay these debts. In 1904, his wife died and then on

e of their childrenpassed away.At the age of 70, his hair was completely white.

He bought many white suits and neckties. Hewore nothing but white from head to

foot until his death on April 21, 1910.

小题1: When Mark Twain was a little baby,          .

A.his mother thought he would die

B.he was as active as other boys

C.he was not strong enough

D.he was always in hospital小题2: In his childhood,        .

A.Mark Twain learned a lot at school

B.Mark Twain often went swimming with other boys

C.Mark Twain often played games with other boys

D.Mark Twain’s mother often worried about his safety小题3: In order to make a living, Mark Twain       .

A.often ran away from home.

B.first worked for a printer.

C.wrote stories in the beginning.

D.joined the army after he worked in a mine.小题4: In the later years of his life, Mark Twain      .

A.continued writing until his death.

B.wrote many stories and earned a lot of money.

C.must have been very sad because he lost his wife and one of his children.

D.lent too much money to others.

单项选择题