问题 选择题

下列关于肺的叙述中,不属于有利于气体交换的条件是(   )

A.肺的末端形成肺泡,数目极多

B.肺可分为左肺和右肺

C.每个肺泡的壁都很薄,只由一层上皮细胞构成

D.肺泡外包绕着毛细血管

答案

答案:B

题目分析:肺是呼吸系统的主要器官,肺的末端形成肺泡,肺泡数量多,扩大了气体交换的面积,与气体交换的功能相适应;肺泡外包绕着大量的毛细血管,每个肺泡的壁都很薄,只由一层上皮细胞构成,有利于气体在肺与血液之间交换,与气体交换的功能相适应;肺分为左肺和右肺与气体交换功能无直接关系,故选项B符合题意。

阅读理解

阅读理解。

     Tilly Smith, the 11-year-old British girl, who was called as "Angle of the Beach", saved 100 tourists from

a Thai beach hit by a tsunami in 2004 and had been named Child of the Year (2005) by readers of a French

children's newspaper.

     She came ahead of a South African Aids orphan, a six-year-old girl who survived a kidnapping by pedophiles

(有恋童癖的人) and a young Parisian pop singer to win the Mon Quotidien award.

     Tilly had studied tsunami with her geography teacher, Andrew Kearney, shortly before flying to Thailand

for a holiday with her parents and younger sister last year.

     As she watched the waves suddenly begin to fall back, and the sea was bubbling, she wamed her mother,

Penny, that the beach was about to be struck by a tsunami. Mrs Smith and her husband, Colin, alerted other

holidaymakers and hotel staff and scores of people were cleared from Maikhao beach at Phuket.

     Tilly, now 11, and back in Thailand for anniversary commemorations of the disaster, said:"It's re- ally good,

just to know about tsunami or any natural hazard in case you are in one. I'm very glad that I was able to say on

the beach that a tsunami was coming. And I'm glad that they listened to me."

     She had earlier said that the state of the sea, which was "sizzling (发出咝咝声) and bubbling", was "exactly

the same as in my geography lesson."

     Tilly read a Thai poem entitled Tsunami at a candle-light vigil to commemorate (纪念)victims of the disaster. 

     She is unaware of her remarkable (非凡的) popularity among French children. Her picture appears on the

front page of Mon Quotidien, which is read by 10 to 14-year-olds.

     "Our readers chose Tilly because they could identify with her," said Francois Dufour, the editor-in-chief.

"To be a pop star at 11 seems impossible, and the idea of having Aids or being kidnapped is remote from their

lives."

1. Tilly Smith was named Child of the Year by _____.[ ]

A. people from Thailand

B. children from Britain

C. people from France

D. government in France

2. According to the passage, how many candidates for Child of the Year are there all in all? [ ]

A. One

B. Two

C. Three

D. Without limit

3. What signs can people find when a tsunami take place? [ ]

A. Bubbling and huge waves.

B. Water rising suddenly with huge sounds.

C. Waves receding suddenly and bubbling.

D. Waves rising and fishes turnig over.

单项选择题 案例分析题