下列关于肺泡适于气体交换的结构特点的叙述,不确切的是() A.肺泡外包围着丰富的

题型:选择题

问题:

下列关于肺泡适于气体交换的结构特点的叙述,不确切的是(  )

A.肺泡外包围着丰富的毛细血管

B.肺泡壁是由一层上皮细胞构成

C.毛细血管壁是由一层上皮细胞构成

D.肺泡壁有软骨支撑

考点:肺与外界的气体交换呼吸系统的组成和功能演示实验:模拟膈肌的运动
题型:选择题

阅读理解。

     JOLIN Tsai (蔡依林), a famous singer, has become an English teacher! But she is not staying in a

classroom to give you talks in English. Instead, she has published (出版) a new book, "Jolin's English

Diary Book". It came out in Taiwan in March. Jolin is helping you learn English in a light hearted way

and give you useful words for life outside your textbooks.  

  "I hope it's a happy English book," she said, "When you learn English in a fun way, you will keep on

doing it." This certainly doesn't mean just reciting (背诵) words. Jolin has a lot of clever ways of learning.

She likes to listen to English songs or find friends to talk to in English. She has been good at English

since Grade 3 in primary school (小学). Because of this, she hosted (主持) news programme on the

radio herself.  

  Jolin knows it's important to put English to good use. So, in her English diaries, she wrote something

about her everyday life, like study, fashion (时尚), travel and family. After each diary, she gives you

lots of notes. You can use them often, too! Jolin also asks you to keep diaries like hers.

1. When did Jolin Tsai publish "Jolin's English Diary Book"? [ ]

A. In May   

B. hi April   

C. In March  

D. In June

2. She has been good at English _____. [ ]

A. since she became a famous singer 

B. since she was in Grade 3

C. since she was in college (大学)  

D. since she was 3 years old

3. Jolin thinks that _____ is important for us to learn English. [ ]

A. just reciting words        

B. hosting a programme on the radio

C. studying in the classroom     

D. putting English to good use

4. What's the meaning of "light-hearted" in the passage? [ ]

A. 轻松愉快的  

B. 漫不经心的  

C. 迷迷糊糊的  

D. 乐于助人的 

5. From the passage we know that _____. [ ]

A. she is not only a famous singer but also an English teacher in a primary school

B. you don't have to keep English diaries

C. she teaches us how to be a famous singer in "Jolin's English Diary Book"

D. Jolin Tsai shows us how to learn English in a fun way

题型:选择题
已知(sinx-2cosx)(3+2sinx+2cosx)=0,则
sin2x+2cos2x
1+tanx
的值为(  )
A.
8
5
B.
5
8
C.
2
5
D.
5
2
题型:选择题

海上旅客运输过程中,承运人对旅客的货币、金银、珠宝、有价证券或者其他贵重物品所发生的灭失、损坏,()。

A.承担全部赔偿责任

B.承担部分赔偿责任

C.按过错承担责任

D.不负赔偿责任

题型:选择题

He waited for __________ seemed like an hour before he finally got the ticket.

A.what

B.which

C.that

D.it

题型:选择题

早在16世纪,安特卫普的证券交易所就开始进行股票交易()

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