The crisis at Japan’s Fukushima Daiichi nuclear energy center caused by the terrible earthquake has raised questions about the future of the nuclear energy industry. Arjun is president of the Institute for Energy and Environmental Research in the United States. He says the disaster in Japan is historic.
This week, the chairman of America’s nuclear agency said there is little chance that harmful radiation(辐射) from Japan could reach the United States. Gregory also said America has a strong program in place to deal with earthquake threats. No new nuclear power centers have been built in the United States since 1979. That was when America’s worst nuclear accident happened at the Three Mile Island center in Pennsylvania. The accident began to turn public opinion against nuclear energy. At present, about twenty percent of electricity in the United States comes from nuclear energy.
German Chancellor Angela Merkel said Germany would close seven nuclear power centers for the time being while energy policy is reconsidered. The European Union is planning to test all centers in its twenty-seven member nations.
Developing nations are less willing to slow down the development of nuclear. China says it will continue with plans to build about twenty-five new nuclear reactors(核反应堆). And India, under a cooperation agreement with the United States, plans to spend billions on new centers in the coming years.
Nuclear reactors supply fourteen percent of global electricity. Nuclear energy is a clean resource, producing no carbon gases. But radioactive waste is a serious problem to be solved. So is the presence of nuclear power centers in earthquake areas like the one near Bushehr, lran.
【小题1】We can learn from the text that America ________.

Round the world tickets (RTWs)

These usually last a year and let you go to several destinations. These may be some restrictions（限制）on where you can go by air so it’s important to check out the terms and conditions of each deal and decide which one suits you best. A typical RTW for (usually) less than ₤1000 would be: London―Toronto―Honolulu―Fiji―Sydney―Hong Kong―London. You can get a preset RTW or make one up to yourself―this can be cheaper in some cases.

?Multi-stopover tickets

If you don’t want to go around the globe but want to see several different places, multi-stopover tickets can let you make several stopovers（中途停留）. For instance, your route could be: London―Singapore―Sydney―Bombay―London. Or it could be a lot more complicated with lots of flights within Australia for instance.

?Open jaw tickets

If you want to go to one destination by air and then travel overland and come back from another destination by air, you can buy an open jaw ticket. For instance, your route could be: London―Cairo―Nairobi―London (Traveling between Cairo and Nairobi by land).

?Air passes

If you want to travel around within one country or even one area you can buy air passes to cover one of the followings: the USA, Africa, Australia, India, the Far East, the Caribbean, South America and the Pacific. In some cases you may have to buy the air pass before you get to the country or area you want to travel in.

Short air passes last a week. Longer ones can last up to 2 months. Costs vary but start ₤150. Ask your travel agent for details.

?Spur legs

Spur legs let you go off on a detour（迂回路）on your way to your final destination. For example you might visit China on your way to Australia.

44. Mr. Brown retired last month and wants to travel around the world; he most probably buys    .

A. Round the world tickets              B. Multi-stopover tickets

C. Open jaw tickets                        D. Air passes

45. Open jaw tickets suit those who want to    .

A. go to several destinations in different countries

B. visit several different places and make several stopovers

C. go to one place and then travel by land and then return by plane

D. go off on a detour on their way to their final destinations

46. What kind of ticket may you buy if you want to travel to Japan passing by Beijing?

A. Open jaw tickets.

B. Round the world tickets.

C. Air passes.

D. Spur legs.

47. How much will the air ticket be if you want to travel in one country for a short time?

A. More than ₤1,000.                B. No less than ₤150.

C. Less than ₤150.                    D. About ₤1,000.

·Round the world tickets （RTWs）

These usually last a year and let you go to several destinations．There may be some restrictions．（限制） on where you can go by air so it's important to check out the terms and conditions of each deal and decide which one suits you best．A typical RTW for （usually） less than ￡1,000 would be:

London—Toronto—Honolulu—Fiji—Sydney—Hong Kong—London．You can get a preset RTW or make one up to yourself—this can be cheaper in some cases．

    ·Multi-stopover tickets

If you don't want to go around the globe but want to see several different places, multi-stopover tickets can let you make several stopovers （中途停留）．For instance, your route could be:

London—Singapore—Sydney—Bombay—London．Or it could be a lot more complicated with lots of flights within Australia for instance．

·Open jaw tickets

If you want to go to one destination by ah- and then travel overland and come back by another destination by air, you can buy an open jaw ticket．For instance, your route could be;

       London—Cairo—Nairobi—London （Traveling between Cairo and Nairobi by land）

·Air passes

If you want to travel around within one country or even one area you can buy air passes to cover one of the following: the USA, Africa, Australia, India, the Far East, the Caribbean, South America and the Pacific．In some cases you may have to buy the air pass before you get to the country or area you want to travel in．

Short air passes last a week．Longer ones can last up to 2 months．Costs vary but start ￡150．Ask your travel agent for details．

·Spur legs

Spur legs let you go off on a detour （迂回路） on your way to your final destination．For example you might visit China on your way to Australia．

49．Mr．Brown retired last month and wants to travel around the world; he most probably buys ______．

       A．Round the world tickets             B．Multi-stopover tickets

       C．Open jaw tickets                      D．Air passes

50．Open jaw tickets suit those who want to ______．

       A．go to several destinations in different countries．

       B．visit several different places and make several stopovers

       C．go to one place and then travel by land and then return by plane

       D．go off on a detour on their way to their final destinations

51．What kind of ticket may you buy if you want to travel to Japan．passing by Beijing?

       A．Open jaw tickets．                        B．Round the world tickets.

       C．Air passes.                                D．Spur legs．

52．If you want to travel in one country for a short time, the air ticket will cost you ______．

       A．more than ￡1,000                       B．no less than ￡150

       C．less than ￡150                          D．about ￡1,000

·Round the world tickets （RTWs）

These usually last a year and let you go to several destinations．There may be some restrictions．（限制） on where you can go by air so it's important to check out the terms and conditions of each deal and decide which one suits you best．A typical RTW for （usually） less than ￡1,000 would be:

London—Toronto—Honolulu—Fiji—Sydney—Hong Kong—London．You can get a preset RTW or make one up to yourself—this can be cheaper in some cases．

·Multi-stopover tickets

If you don't want to go around the globe but want to see several different places, multi-stopover tickets can let you make several stopovers （中途停留）．For instance, your route could be:

London—Singapore—Sydney—Bombay—London．Or it could be a lot more complicated with lots of flights within Australia for instance．

·Open jaw tickets

If you want to go to one destination by ah- and then travel overland and come back by another destination by air, you can buy an open jaw ticket．For instance, your route could be;

　　　 London—Cairo—Nairobi—London （Traveling between Cairo and Nairobi by land）

·Air passes

If you want to travel around within one country or even one area you can buy air passes to cover one of the following: the USA, Africa, Australia, India, the Far East, the Caribbean, South America and the Pacific．In some cases you may have to buy the air pass before you get to the country or area you want to travel in．

Short air passes last a week．Longer ones can last up to 2 months．Costs vary but start ￡150．Ask your travel agent for details．

·Spur legs

Spur legs let you go off on a detour （迂回路） on your way to your final destination．For example you might visit China on your way to Australia．

49．Mr．Brown retired last month and wants to travel around the world; he most probably buys ______．

　　　 A．Round the world tickets　　　　　　 B．Multi-stopover tickets

　　　 C．Open jaw tickets　　　　　　　 　　 D．Air passes

50．Open jaw tickets suit those who want to ______．

　　　 A．go to several destinations in different countries．

　　　 B．visit several different places and make several stopovers

　　　 C．go to one place and then travel by land and then return by plane

　　　 D．go off on a detour on their way to their final destinations

51．What kind of ticket may you buy if you want to travel to Japan．passing by Beijing?

　　　 A．Open jaw tickets．　　　　　　　　 　　 B．Round the world tickets.

　　　 C．Air passes.　　　　　　　　　　　 　　　 D．Spur legs．

52．If you want to travel in one country for a short time, the air ticket will cost you ______．

　　　 A．more than ￡1,000　　　　　　　　　 　 B．no less than ￡150

　　　 C．less than ￡150　　　　　　　　　　 　　 D．about ￡1,000

Are Baiji Dolphin Extinct?

       Does the Yangtze River still have baiji the graceful, grey dolphin with tiny eyes and a long narrow beak?

    Since November 6, a team of scientists from China, Switzerland, the United Kingdom, the United States, Germany and Japan have been searching for any sign of the freshwater dolphin on the middle and lower sections of the river．After six weeks, they came back empty-handed．

    Wang Ding, of the Chinese Academy of Sciences, who is the head of the team, said．he has seen a sharp decline in the baiji population over the past few decades． However, he is still unwilling to call the species extinct, and adds, "We will try every effort to save them as long as they are not found to be extinct．"

    The baiji is shy and nearly blind and is, one of the world's oldest．'dolphin species． It dates back some 20 million years and is found only in the Yangtze．It's listed as one of the  12 most endangered animal species in the world．

       Around 400 baiji were believed to be living in the Yangtze until the 1980s．A 1997 survey spotted 13．Two years later their numbers were down to two．

    The rapid disappearance of this dolphin over the past two decades coincided with（与……同时）the rapid expansion of economic development along the river． Research on some dead baiji collected in recent years showed that more than 90 percent of the deaths were caused by human activities．

   One reason is that over-fishing has cut the dolphin's food sources．Dams built along the river and neighboring waterways have also kept them from swimming into and out of their habitats． Meanwhile, waste discharge（排放） has seriously polluted the river． And heavy river traffic has greatly reduced their living space．

    The disappearance of the baiji would be the first instance of a large aquatic mammal（水生哺乳动物）being driven to extinction since hunting killed off the monk seal（僧海豹）around                                                                      1952．

56．Bajji dolphin used to live in        of the Yangtze River.

       A．upper sections                                         B．middle sections

       C．lower sections                                         D．middle and lower sections

57．The first paragraph shows writer's          .

       A．love of baiji                                                B．eagerness to write the passage

       C．anger for not having a baiji                           D． dissatisfaction with our government

58．Which of the following countries didn't join the action to search for baiji?

       A．England．               B．America．           C．Japan．             D．India

59． How many baiji dolphins were left by the end of last century?

       A．400                        B．13                 C．Atmost2              D．2

60．Which of the following reasons doesn't lead to the rapid disappearance of baiji dolphins? 

     A． Over-fishing．                                         B． Heavy Road Traffic．                 

       C． Dams built along the river．                      D． Waste discharge．