问题 填空题

体循环起始于______,终止于______;肺循环起始于______,终止于______.

答案

体循环是指血液由左心室进入主动脉,再流经全身的各级动脉、毛细血管网、各级静脉,最后汇集到上下腔静脉,流回到右心房的循环;即体循环起始于左心室,终止于右心房;肺循环是指血液由右心室流入肺动脉,流经肺部的毛细血管网,再由肺静脉流回左心房的循环;即肺循环起始于右心室,终止于左心室.

故答案为:左心室;右心房;右心室;左心房

阅读理解

阅读下面短文,并根据短文后的要求答题。

       Mr King worked in a shop and drove a car for the manager. He drove carefully and could stay cook

in time of danger. And he escaped from several accidents.

       Mr Baker, one of his friends, worked in a factory outside the city. (1)It's far from his house and he

had to go to work by bus. As the traffic was heavy in the morning, sometimes he was late for work. His

manager said the young man would be sent away unless he got to his office on time. Mr Baker hoped to

buy a car, but he didn't have enough money. Then he decided to buy an old one. He went to the market

and at last he chose a beautiful but cheap car. He said he wanted to have a trial drive, the seller agreed.

He asked Mr King to help him.

       Mr King examined the car at first and then drove it away. It was five in the morning. (2)There were

few cars in the street. (3)At first he drove slowly and it worked well. Then he drove fast. And when he

reached a crossing, the lights turned red. He tried to stop it, but he failed and nearly hit an old woman. A

policeman told him to stop, but the car went on until it hit a big tree by the road.

       "(4)Didn't you hear me?" the policeman asked angrily.

       "Yes, I did, sir," said Mr King, "but the car didn't."

1. 写出(1)处划线句子的同义词。

It's far from his house and he had to             a bus           work.

2. 将(2)处划线句子改为反意疑问句。

There were few cars in the street,             ___    _?

3. 把 (3) 处划线句子译成汉语。

                                                                                           

4. 用don't和know 仿造一个与 (4) 处划线句子相似的句子。

                                                                                           

5. Why did Mr Baker want to buy an old car?(根据短文内容回答问题)

                                                                                           

单项选择题 B型题