问题 填空题

如图是有关人心脏的结构图解,请根据图解回答问题:

(1)心脏的内部有四个腔,分别是______.

(2)在心房和心室之间以及心室与动脉之间有控制血液向一个方向流动的______.

(3)在观察心脏的结构时,用手捏心室的两侧壁,______的一侧为左半部分.

答案

心脏的结构如图所示:

(1)心脏的四个腔是:左心房、左心室、右心房、右心室.

(2)在心房与心室之间有房室瓣,保证血液只能从心房流向心室;在心室与动脉间有动脉瓣,保证血液只能从心室流向动脉.

(3)左心室的收缩把血液输送到全身,而右心室的收缩把血液输送到肺,二者相比,左心室输送血液的距离长,因此左心室的壁比右心室的壁厚.

故答案为:(1)左心房、右心房、左心室、右心室

(2)房室瓣和动脉瓣

(3)较厚

阅读理解

阅读理解。

     One day three Frenchmen who did not know English very well were talking about the English language.

     The first Frenchman said, "I heard someone shout "look out", I put my head out of a window and a basin of water fell on me. It seems that "look out" may mean "don't look out!""

     The second one followed, "I was once on a ship and heard the captain shout, "All hands on the deck" I put my hands on the deck and someone trod (踩) on them."

      The third one told his friends his experience too, "One early morning I called on my English friend and the maid (女佣) said, "He is not up yet, come back in half an hour." When I went again for him, she said, "He's not down yet." I said, "If he's not up and he is not down, where is he then? What a strange language it is!""

1. What is the possible meaning of "look out"? [ ]

A. Put your head out and look outside

B. Be careful

C. Come out and have a look

D. Both A and B

2. When the captain shouted. "All hands on deck", he really meant to tell _____. [ ]

A. Everyone on the ship to put his hands on the deck

B. All the sailors (水手) to put their hands on the deck

C. All the sailors to come up to deal with (处理) some trouble

D. Everyone on ship to gather (集合) on the deck

3. What did the maid mean when she said, "He's not up yet"? [ ]

A. He has not risen to his feet yet.

B. He's not back yet.

C. He has not got up yet.

D. He was ill in bed.

4. Where was the third Frenchman's English friend then?[ ]

A. He was at a party.

B. He was at work.

C. He was in his bedroom.

D. He was in the bathroom.

5. What do you think was the three Frenchmen's real trouble? [ ]

A. English is too difficult to understand.

B. They didn't use the language so often.

C. They knew nothing about the English idioms. (成语\习惯用语)

D. They were not sure about the English grammar.

填空题