Task 2

21. In the twentieth century, soot          

22. If snow and ice covered areas begin melting,           

23. A soot forcing is unusually effective, which          

24. Hansen cautioned that greenhouse gases          

25. Warming in the Northern Hemisphere was large in at middle and high latitudes.           

A. produces much more global warming than a carbon-dioxide forcing of the same magnitude

B. contributed to 25 percent of observed global warming

C. winter and spring

D. the warming effects increase

E. still surpass soot in warming the world's climate during the last century

F. can be seen mostly in the Northern Hemisphere

Despite the hostile environment, both animals and plants can be found in the oceans and on land

in polar areas. 

• A、True
  
  

• B、False
  
  

• C、Not Given
  
  

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The Disappearing Honeybee

Do you run away when you hear a bee buzzing?Many people do. A bee sting hurts and some people are allergic to bee venom (蜂毒) . But did you know that bees are very important to humans?Honeybees do more than just make honey. They fly around and pollinate (传授花粉) flowers,  plants, and trees.   26   One third of America's food supply is pollinated by the honeybee.

Have you seen or heard a honeybee lately?Bees are mysteriously disappearing in many parts of the world. Most people don't know about this problem. It is called Colony Collapse Disorder (CCD) . Some North American beekeepers lost 80%of their hives (蜂巢) from 2006—2008. ___27___

The disappearance of the honeybee is a serious problem. Can you imagine never eating another blueberry?What about almonds and cherries?Without honeybees food prices will skyrocket (猛涨) . ___28___

This problem affects other foods besides fresh produce. Imagine losing your favorite ice cream! Haagen Daaz is a famous ice cream company. Many of their flavors rely on the hard working honey bee. ___29___ They also created a website called help the honeybee. com.

Donating money to research is the most important thing humans can do to save the honeybees. Scientists need money to investigate the causes of Colony Collapse Disorder. Some scientists blame CCD on climate change. Others think pesticides (杀虫剂) are killing the bees.___30___ Beekeepers transport their hives from place to place in order to pollinate plants year round.

Not everyone has money to donate regularly. There are other ways to help the honeybee. Spread the word, by telling your friends and family about the problem. Tell your teacher about the disappearing bees too. Maybe your class can write a letter to the government.

 

A. In 2008 Haagen Daaz began raising money for CCD.

B. It is hard to pin down what has been causing honeybees to vanish.

C. The poorest people always suffer the worst when there is a lack of food.

D. Our fruits, nuts, and vegetables rely on these pollinators.

E. Commercial bee migration may also cause CCD.

F. Bees in Italy and Australia are disappearing too.