问题 选择题

气体从外界进入人体血液中的路线可以表示为(   )

①鼻腔  ②咽  ③喉 ④支气管 ⑤气管 肺泡外毛细血管肺泡

A.①→②→③→④→⑤→⑥→⑦

B.①→②→③→⑤→④→⑦→⑥

C.①→②→③→⑤→④→⑥→⑦

D.①→②→③→④→⑤→⑦→⑥

答案

答案:B

题目分析:呼吸系统包括呼吸道和肺两部分.呼吸道的组成由上到下依次是鼻腔、咽、喉、气管和支气管,外界的空气进入肺依次经过鼻腔、咽、喉、气管和支气管,最后进入肺,在肺里完成气体交换,肺泡外缠绕着毛细血管,通过气体的扩散作用,氧气由肺泡进入毛细血管中的血液里,血液中的二氧化碳交换到肺泡里,呼出体外.

阅读理解

Homesick is a compound word made up of HOME and SICK. You know what each word means on its own, of course. But think about what the words mean when they are used together. Homesick means SICK FOR HOME.

Now think for a minute about SEASICK. If you change the word home in the definition(释义)to the word sea, would the definition fit SEASICK? Seasick means SICK BY THE MOVEMENT ON THE SEA. When you are homesick ,the only place you want to be is at home. When you are seasick, the last place you want to be is at sea.

Have you ever heard of a person being heartsick? Heartsick doesn’t mean that something  is wrong with a person’s heart. people are heartsick when they are hurt deep inside and when they feel as if their hearts are broken.

But, on the other hand, we have such compound words as handshake, handstand, and handbag. Perhaps you may write definitions for them.

小题1:The word SEASICK means“______”.

A.to be eager to go to the sea

B.what has nothing to do with the sea

C.to be sick because of the sea

D.that the sea is terrible小题2:When we say a person is heartsick, we mean that________.

A.his heart is sick

B.his heart needs testing

C.he’s sorry at heart

D.he’s terribly disappointed and sad小题3:“The last place you want to be” is_________.

A.where you want to be most

B.where you want to be least

C.where you go the last

D.the last place you go to小题4:The definitions of handshake, handstand and handbag are_______.

A.easy to know

B.difficult to know

C.impossible to learn

D.unnecessary to learn

单项选择题 案例分析题