我国的三级行政区划是指（ ） A．省、市、乡 B．中央、省、县 C．省、县、乡

LeFortI型骨折()
LeFortⅡ型骨折()
颧骨颧弓骨折()
下颌骨骨折()

A．骨折线经过鼻骨、泪骨，最后达上颌骨翼突缝

B．可有咬合关系错乱

C．两者均有

D．两者均无

阅读短文，回答问题。

         Jason Queally is one of the fastest men in the world on bicycle. But do you really call the thing in the

picture a bicycle? Well, yes, Jason's human-powered machine, With its two wheels, is, of course, a bicycle.

         Every year, a very important humanpowered bicycle is held in Nevada, USA.  The speed of a bike is

measured (测定) for only 200-metres, but players take more than a kilometre to get their bikes going fast. Jason

Queally's fastest speed for the 200metre race was 103.5 kilometres an hour.

         At this year's race, Jason failed to reach the finishing line. He was speeding along at about 70 kilometres

an hour when he began to lose control of his bike. When he tried to slow down, it began to smoke.Soon the

inside of his bike was filled with smoke.He couldn't see, and he couldn't breathe. At 70 kilometres an hour, a

crash could be very serious. Jason was frightened, but he managed to stop the bike safely. He would rapair his

bicycle and try again another time to be the world's fastest man on a bike. Better luck next time, Jason. 

         Maybe you're surprised that these bikes go so quickly, but is it useful? It could be. Cars are becoming

more and more popular, and they are very safe, comfortable and easy to drive, but they also pollute the air in

our cities. Scientists and engineers are learning from fast racing bikes how to make human-powered vehicles

that might be uesful for daily travel.

1. Is Jason's human-powered machine a bicycle?

2. How often is the human-powered bicycle race held in Nevada?

   ________________________________________________________________

3. Did Jason stop his bike safely or was he badly hurt?

    ________________________________________________________________

4. Why did he lose this year's race? 

5. What is the best vehicle for daily travel like according to the writer?

    ________________________________________________________________

葡萄胎（）

A.癌前疾病

B.恶性肿瘤

C.良性肿瘤

D.浸润癌

E.癌前病变

I began working in journalism(新闻工作) when I was eight.It was my mother’s idea.She wanted me to“make something”of myself,and decided I had better start young if I was to have any chance of keeping up with the competition.

With my load of magazines I headed toward Belleville Avenue.The crowds were there.There were two gas stations on the corner of Belleville and Union.For several hours I made myself highly visible,making sure everyone could see me and the heavy black letters on the bag that said THE SATURDAY EVENING POST.When it was suppertime,I walked back home.

“How many did you sell,my boy?”my mother asked.

“None.”

“Where did you go?”

“The corner of Belleville and Union Avenues.”

“What did you do?”

“Stood on the corner waiting for somebody to buy a Saturday Evening Post.”

“You just stood there?”

“Didn’t sell a single one.”

“My God,Russell!”

Uncle Allen put in,“Well,I’ve decided to take the Post.”I handed him a copy and he paid me a nickel(五分镍币).It was the first nickel I earned.

Afterwards my mother taught me how to be a salesman.I would have to ring doorbells,address adults with self-confidence(自信),and persuade them by saying that no one,no matter how poor,could afford to be without the Saturday Evening Post in the home.

One day,I told my mother I’d changed my mind.I didn’t want to make a success in the magazine business.

“If you think you can change your mind like this,”she replied,“you’ll become a good-for-nothing.”She insisted that,as soon as school was over,I should start ringing doorbells,selling magazines.Whenever I said no,she would scold me.

My mother and I had fought this battle almost as long as I could remember.My mother,dissatisfied with my father’s plain workman’s life,determined that I would not grow up like him and his people.But never did she expect that,forty years later,such a successful journalist as me would go back to her husband’s people for true life and love.

小题1:Why did the boy start his job young?

A．He wanted to be famous in the future.

B．The job was quite easy for him.

C．His mother had high hopes for him.

D．The competition for the job was fierce.小题2:From the dialogue between the boy and his mother,we learn that the mother was _______.

A．excited

B．interested

C．ashamed

D．disappointed小题3:What did the mother do when the boy wanted to give up?

A．She forced him to continue.

B．She punished him.

C．She gave him some money.

D．She changed her plan.小题4:What does the underlined phrase “this battle”(last paragraph) refer to?

A．The war between the boy’s parents.

B．The arguing between the boy and his mother.

C．The quarrel between the boy and his customers.

D．The fight between the boy and his father.小题5:What is the text mainly about?

A．The early life of a journalist.

B．The early success of a journalist.

C．The happy childhood of the writer.

D．The important role of the writer in his family.

挡土墙包括（）型式。

A.重力式

B.悬臂式

C.砌石式

D.扶壁式