问题 选择题

近年来,在世界许多水域中都发现了畸形蛙、畸形鱼等水生动物,你认为造成这类现象的原因主要是什么?                       (    )

A.生物物种的自然衰退

B.生物间的近亲交配

C.水源污染现象有日趋严重

D.病毒、病菌的感染

答案

答案:C

题目分析:近年来,在世界许多水域中都发现了畸形蛙、鱼类等水生动物,造成的主要原因是水源污染日趋严重.水域的污染使水中含有大量的化学物质,鱼类等水生动物的胚胎生长发育过程中胚细胞的分裂受一些物理或化学的刺激而产生不正常分裂,有可能导致成体畸形.故选C

阅读理解

阅读理解。

     The spring festival is celebrated not only in Chipa but also in other parts of the world. The traditional

 holiday is the most important to Chinese both home and abroad.

United Kingdom

     Celebrations for Spring Festival in the UK started in 1980, with the first evening party held in 2002.

Every new year, people get together and have a lot of activities. They sing songs, dance to music, share

photos with friends or enjoy films in a cinema.

United States

     Spring Festival has become a key time for Chinese living or working in the US. They join in a large

evening party to welcome the traditional new year. It is a good chance for people to build a circle of

friends and feel that they are not alone because they share the same culture and values.

Australia

     The Chinese new year will be welcomed with three weeks of celebrations across Australia. Many

people come to Sydney's Chinatown or Little Bourke in Melbourne. They enjoy fireworks,  lion dances,  

dragon boat races and many other traditional activities.  The celebrations are also a bridge towards better

understanding between Chinese and non-Chinese.

Singapore

    The family dinner on new year's eve is an important tradition for Chinese whether  they were born in

Singapore or moved there from China. They place traditional food on a table as an act of remembering

their past.  Then the whole family enjoy their dinner together. They usually hold it at home because having

it in a restaurant takes away the meaning of the tradition.

1. Celebrations for Spring Festival in the UK started in _____.    

A. 1890          

B. 1980             

C. 2000            

D. 2002

2. At Spring Festival, American Chinese join in a large evening party to _____.   

A. say hello to the new year           

B. refuse a good chance

C. tell others they are alone           

D. share different cultures

3. Chinese in Australia enjoy the following activities except _____. 

A. fireworks                          

B. lion dances

C. bridges                            

D. dragon boat races

4. In Singapore, Chinese families don't hold the new year dinner at a restaurant but at

    home because _____.    

A. they were born in Singapore         

B. they moved there from other places

C. the restaurant is far away            

D. they want to keep Chinese tradition

5. After reading the passage above, we might say _____. 

A. all parts of the world celebrate Spring Festival

B. the Chinese new year is celebrated only in China

C. celebrations for Spring Festival are just held in four foreign countries

D. Chinese across the world have a strong feeling towards Spring Festival

单项选择题