问题 选择题

长沙烈士公园内的所有生物组成了一个(  )

A.个体

B.种群

C.群落

D.生态系统

答案

生物个体就是一个生物体,如一颗小麦等;种群(population)指在一定时间内占据一定空间的同种生物的所有个体.种群中的个体并不是机械地集合在一起,而是彼此可以交配,并通过繁殖将各自的基因传给后代;我们把在一定生活环境中的所有生物种群的总和叫做生物群落,简称群落,即一个生态系统中的所有生物;生态系统指由生物群落与无机环境构成的统一整体.由上可知,某中学校园生物角内的所有生物组成的应该是一个生物群落.

故选:C.

阅读理解

阅读理解。

    After many days of waiting, the Olympic mascots were finally chosen at 8pm on November 11, 2005.

The Olympic mascots are the Olympic torch (火焰), the fish, the panda, the Tibetan gazelle (藏羚羊) and

the swallow (燕子). The panda is named "Jingjing". He was chosen because he makes children smile and

brings the blessing of happiness wherever he goes. He was chosen to show China's wish to protect nature.

    Unlike the well-known panda, the Tibetan antelope is considered much sportier than other chosen animals.

"I can run 70-100 km per hour. So you see, I'm a perfect symbol (象征) of the Olympics-'higher, faster and

stronger'." Says the athlete, whose name is "Yingying".

    The fish, "Beibei" stands for prosperity (繁荣). She will represent (代表) water sports. "Nini", the swallow

stands for a good luck and wish for a better life. She will represent gymnastics (体操). The Olympics flame,

"Huanhuan" gives out enthusiasm (热情) and best wishes for the Olympics. He will represent ball games.

    Many teenagers are surprised that Beijing will have mascots but very excited that they will have more

choices when shopping for souvenirs (纪念品).

    "I hope there will be a cartoon in which these mascots are the main characters, doing different sports. So

the whole world will have a better understanding of the Chinese spirit," said one teenager.

1. There are ______ Olympic mascots for the 2008 Beijing Olympic Games. [ ]

A. four kinds of

B. three kinds of

C. five kinds of

D. two kinds of

2. The panda, "Jingjing" was chosen ______.[ ]

A. to show China's wish to protect nature

B. as a symbol of the spirit of the Olympics

C. to give best wishes for Olympics

D. to show Chinese's love

3. ______ will represent gymnastics. [ ]

A. The fish named "Beibei"

B. The swallow named "Nini"

C. The Olympic flame named "Huanhuan"

D. The fish named "yuyu"

4. Zhou Xia enjoys all kinds of ball games very much, so she may buy             as a souvenir. [ ]

A. Nini

B. Yingying

C. Huanhuan

D. Beibei

5. Mr Brown's son likes diving, he may buy his son            as a birthday present. [ ]

A. Jingjing

B. Beibei

C. Huanhuan

D. Nini

单项选择题