问题 选择题

下列食物链中正确的是(  )

A.草→蝗虫→青蛙→蛇→鹰

B.草←蝗虫←青蛙←蛇←鹰

C.草→兔→羊→狼

D.阳光→草→兔→狐狸

答案

食物链反映的是生产者与消费者之间吃与被吃这种关系的,所以食物链中不应该出现分解者和非生物部分.食物链的正确写法是:生产者→初级消费者→次级消费者…注意起始点是生产者.

A、该食物链正确的表示了生产者草与消费者蝗虫、青蛙、蛇、鹰它们五者的关系,故符合题意;

B、食物链的箭头指向消费者,该选项把箭头的方向弄反了,故不符合题意;

C、羊是食草动物是初级消费者好,羊和兔是竞争关系不是捕食关系,这四者不能形成一条食物链,可以形成食物网,

故不符合题意;

D、阳光是非生物部分,既不属于生产者也不属于消费者,食物链的组成未包括非生物部分,故不符合题意.

故选A

阅读理解

阅读理解。

     A simple flower made headlines in the British press last week. How could that be?

     British Prime Minister David Cameron and his ministers were attending a reception hosted by Chinese

Premier Wen Jiabao in the Great Hall of the People in Beijing. They insisted on wearing poppies (罂粟花)

in their buttonholes.

     What's wrong with that?

     According to the Global Times, Chinese officials apparently had asked the UK delegation not to wear

poppies. The British said that their poppies meant a great deal to them and they would wear them all the

time.

     So what's the significance of the poppy? It's a flower which has different cultural and symbolic

meanings for British and Chinese people.

     From the Chinese point of view, the poppy is a symbol of China's humiliation (dishonor) at the hands

of European powers in the Opium Wars of the 19th century. Britain forced China to open its borders to

trade-including in the narcotic opium (a drug that affects your mind in a harmful way)-which was made

from poppies grown in India.

     Yet from the British viewpoint the poppy is a reminder of the killing during World War I. Blood-red

poppies grew on the battlefields of Flanders in Belgium where many thousands of British, Belgian and

French soldiers died or were buried.Since then, Poppy Day or Remembrance Day (November 11) has

become a time in the UK to remember the sacrifices of British soldiers and civilians in times of war.

     So you can see that the poppy set off strong feelings in the hearts of Chinese and British people for

different reasons. And it makes sense for us to try to understand each other's standpoint.

     Of course cultural differences can also be interesting and funny. And what one nation or nation's

leader thinks is an acceptable gift may be viewed very differently by their guest from overseas. US

President Barack Obama famously gave a gift of an iPod to Britain's queen-a dull person with no interest

in music. Obama also presented Gordon Brown(when Brown was British prime minister) with a fine

selection of American movies. But they were in US format and impossible to play on British DVD players.

     Many countries have diplomats stationed overseas. Diplomats provide information and advice to their

governments back home. However, sometimes it would seem that even diplomats can overlook the cultural

significance of a small flower.

1. British Prime Minister David Cameron probably attended a reception in Beijing on _____.

A. October 1

B. November 11

C. December 31

D. January 1

2. The poppy reminds the Chinese of _____.

A. the shame caused by European countries in the 19th century

B. the British soldiers killed and buried during world War

C. the Chinese soldiers killed during World War

D. the suffering cause by British during World War

3. The diplomatic problem in Beijing is mainly caused by ____.

A. the translation mistake

B. the language difference

C. the cultural difference

D. the different lifestyle

4. We can infer that ____.

A. Britain's Queen is not interested in art

B. Gordon Brown was fond of American movies US President Barack Obama sent him

C. US President Barack Obama received a gift for music

D. Britain's Queen may not like the iPod US President Barack Obama presented her

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