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B
Words：328 难度系数：★★★ 建议用时：9分钟
(London，April 1st,2009 )U.S.President Barack Obama and British Prime Minister Gordon Brown are calling for global unity as world leaders gather in London for an emergency economic summit (峰会)．The president says no one country can fix the economic crisis.
Mr.Obama stressed the need for all the participants to seek common ground to deal with the economic crisis.“I am absolutely confident that this meeting will reflect enormous consensus
about the need to work together to deal with these problems，” said Mr.Obama.
There are signs of tension，as the G20 Summit prepares to begin its work in London.Some countries are blaming the United States for sparking the economic crisis through the deregulation(撤销管制规定)of its financial scene—a move that sparked an economic recession (经济衰退)．The president says the United States has made mistakes，but so did other countries whose regulatory systems could not keep pace with a changing financial sector.He says it is time to look for solutions.“At this point，I am less interested in identifying blame than in fixing the problem，” he said.
France and Germany say the emphasis should be on regulatory reform.French President Nicholas Sarkozy even told an interviewer that he might walk out of the summit，if nations fail to agree on stricter regulation of global financial markets.Brown predicts no walkouts.President Obama says reports of differences are overstated.And，Prime Minister Brown predicts no one will walk away from the summit and its important work.“I am confident President Sarkozy will not be here for the first course of our dinner，but will still be sitting as we complete our dinner this evening，” said Mr.Brown.“Never before has the world come together in this way to talk about an economic crisis，” he said.“Any of the crises we have seen since the Second World War，you have not had this level of international cooperation.”
【解题导语】 本文介绍了伦敦G20峰会的有关情况，涉及奥巴马总统、萨科齐总统和布朗首相的主要观点以及与会国之间的意见分歧。
5．According to the news report，the aim of the summit in London is mainly to ________.
A．seek solutions to the world economic crisis
B．remove the misunderstanding between world leaders
C．build up new regulatory systems in each country
D．strengthen the economic relationship between countries
解析：选A。推理判断题。根据文章第一段的最后一句，第二段首句和文章最后两句内容可判断在伦敦举办G20峰会的目的是共同寻求化解经济危机的方法。
6．When President Obama says no one country can fix the economic crisis，he wants to stress the ________.
A．importance of the USA taking part in the summit
B．effort to reach an agreement on the economic recession
C．need for all the members at the summit to work together
D．the necessary reform in the regulatory systems
解析：选C。推理判断题。根据第一段最后一句和第二段的第一句话可知，奥巴马总统指出没有哪个国家能单独化解经济危机，强调与会各国应求同存异，齐心协力寻求化解经济危机的良策。
7．Differences between leaders at the summit can be seen from the fact that ________.
A．President Obama says differences are overstated
B．French President told an interviewer that he might walk out of the summit
C．Prime Minister Brown predicts no one will walk away from the summit
D．nations do not agree on stricter regulation of global financial markets
解析：选B。推理判断题。根据第三段第一、二句和第四段的第一、二两句可知，法国和德国领导人的观点与美国总统的观点不同，萨科齐总统甚至对媒体说他可能会退出峰会，由此可见在伦敦的G20峰会上，各国领导人意见不一致。
8．Mr.Brown seems to see the summit as ________.
A．the only way to solve the world problems
B．an unhappy gathering for the world leaders
C．a high-level international cooperation
D．a meeting with too many differences
解析：选C。推理判断题。根据最后一段中英国首相布朗的话“Never before has the world come together in this way to talk about an economic crisis”和“Any of the crises we have seen since the Second World War，you have not had this level of international cooperation.”可知，布朗首相认为伦敦G20峰会是一次空前的国际间的合作。
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A
A new study says one part of the human brain may become smaller as the result of a condition known as jet lag. Jet lag results from flying long distances in an airplane. People with jet lag may feel extremely tired for several days. They may also have problems thinking clearly and remembering.
Recently a researcher at the University of Bristol in Britain reported the findings of his jet lag study, which involved twenty young women who worked for international airlines. They had served passengers on airplanes for five years. These flight attendants flew across many countries and at least seven time zones. In the study, the flight attendants had different amounts of time to recover from jet lag. Half the women spent five days or fewer in their home areas between long flights. The other half spent more than fourteen days in their home areas.
The researcher took some saliva from the women”s mouths to measure levels of a hormone(荷尔蒙) that increases during stress(紧张). He tested them to see if they could remember where black spots appeared on a computer screen. And he took pictures of their brains to measure the size of the brain”s temporal lobes(脑叶).
It was found that the women who had less time between flights had smaller right temporal lobes. This area of the brain deals with recognizing and remembering what is seen. The same group performed worse and had slower reaction times on the visual memory test. And their saliva samples showed higher levels of stress hormones.
The researcher believes the brain needs at least ten days to recover after a long trip. He says airline workers told him their ability to remember got worse after working on planes for about four years. Other studies have shown that increased feelings of stress can cause a loss of cells in the part of the brain that controls memory.
Scientists say more tests are needed to study the effects of jet lag on the brain. They want to find out if too much jet lag could permanently (永久性的) affect memory.
67. According to the text, jet lag .
A. can cause difficulties in speaking
B. can make people feel tired for a few weeks
C. can be only found in flight attendants
D. can be caused by flying over several time zones
68. It can be inferred from the text that .
A. the conclusion is refused by many scientists
B. scientists fear that this research is not done properly
C. the scientific conclusion needs the support from many tests
D. every women who were examined in the research were mot healthy
69. From the result of the research we can see that .
A. the women who have longer rest at home show better memory
B. the women who fly in short time have smaller right temporal lobes
C. the women who have longer flights fail the memory test
D. the women who rest more than 14 days produce less hormones
70. What is the subject discussed in the text?
A. The cause of jet lag.
B. A story of a group of flight attendants.
C. The importance of having enough rest after flights.
D. A research about the effects of jet lag on the brain.
参考答案
67-70.D .C .A .D
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B
Words：328 难度系数：★★★ 建议用时：9分钟
(London，April 1st,2009 )U.S.President Barack Obama and British Prime Minister Gordon Brown are calling for global unity as world leaders gather in London for an emergency economic summit (峰会)．The president says no one country can fix the economic crisis.
Mr.Obama stressed the need for all the participants to seek common ground to deal with the economic crisis.“I am absolutely confident that this meeting will reflect enormous consensus
about the need to work together to deal with these problems，” said Mr.Obama.
There are signs of tension，as the G20 Summit prepares to begin its work in London.Some countries are blaming the United States for sparking the economic crisis through the deregulation(撤销管制规定)of its financial scene—a move that sparked an economic recession (经济衰退)．The president says the United States has made mistakes，but so did other countries whose regulatory systems could not keep pace with a changing financial sector.He says it is time to look for solutions.“At this point，I am less interested in identifying blame than in fixing the problem，” he said.
France and Germany say the emphasis should be on regulatory reform.French President Nicholas Sarkozy even told an interviewer that he might walk out of the summit，if nations fail to agree on stricter regulation of global financial markets.Brown predicts no walkouts.President Obama says reports of differences are overstated.And，Prime Minister Brown predicts no one will walk away from the summit and its important work.“I am confident President Sarkozy will not be here for the first course of our dinner，but will still be sitting as we complete our dinner this evening，” said Mr.Brown.“Never before has the world come together in this way to talk about an economic crisis，” he said.“Any of the crises we have seen since the Second World War，you have not had this level of international cooperation.”
【解题导语】 本文介绍了伦敦G20峰会的有关情况，涉及奥巴马总统、萨科齐总统和布朗首相的主要观点以及与会国之间的意见分歧。
5．According to the news report，the aim of the summit in London is mainly to ________.
A．seek solutions to the world economic crisis
B．remove the misunderstanding between world leaders
C．build up new regulatory systems in each country
D．strengthen the economic relationship between countries
解析：选A。推理判断题。根据文章第一段的最后一句，第二段首句和文章最后两句内容可判断在伦敦举办G20峰会的目的是共同寻求化解经济危机的方法。
6．When President Obama says no one country can fix the economic crisis，he wants to stress the ________.
A．importance of the USA taking part in the summit
B．effort to reach an agreement on the economic recession
C．need for all the members at the summit to work together
D．the necessary reform in the regulatory systems
解析：选C。推理判断题。根据第一段最后一句和第二段的第一句话可知，奥巴马总统指出没有哪个国家能单独化解经济危机，强调与会各国应求同存异，齐心协力寻求化解经济危机的良策。
7．Differences between leaders at the summit can be seen from the fact that ________.
A．President Obama says differences are overstated
B．French President told an interviewer that he might walk out of the summit
C．Prime Minister Brown predicts no one will walk away from the summit
D．nations do not agree on stricter regulation of global financial markets
解析：选B。推理判断题。根据第三段第一、二句和第四段的第一、二两句可知，法国和德国领导人的观点与美国总统的观点不同，萨科齐总统甚至对媒体说他可能会退出峰会，由此可见在伦敦的G20峰会上，各国领导人意见不一致。
8．Mr.Brown seems to see the summit as ________.
A．the only way to solve the world problems
B．an unhappy gathering for the world leaders
C．a high-level international cooperation
D．a meeting with too many differences
解析：选C。推理判断题。根据最后一段中英国首相布朗的话“Never before has the world come together in this way to talk about an economic crisis”和“Any of the crises we have seen since the Second World War，you have not had this level of international cooperation.”可知，布朗首相认为伦敦G20峰会是一次空前的国际间的合作。
********************************************************结束
A
A new study says one part of the human brain may become smaller as the result of a condition known as jet lag. Jet lag results from flying long distances in an airplane. People with jet lag may feel extremely tired for several days. They may also have problems thinking clearly and remembering.
Recently a researcher at the University of Bristol in Britain reported the findings of his jet lag study, which involved twenty young women who worked for international airlines. They had served passengers on airplanes for five years. These flight attendants flew across many countries and at least seven time zones. In the study, the flight attendants had different amounts of time to recover from jet lag. Half the women spent five days or fewer in their home areas between long flights. The other half spent more than fourteen days in their home areas.
The researcher took some saliva from the women”s mouths to measure levels of a hormone(荷尔蒙) that increases during stress(紧张). He tested them to see if they could remember where black spots appeared on a computer screen. And he took pictures of their brains to measure the size of the brain”s temporal lobes(脑叶).
It was found that the women who had less time between flights had smaller right temporal lobes. This area of the brain deals with recognizing and remembering what is seen. The same group performed worse and had slower reaction times on the visual memory test. And their saliva samples showed higher levels of stress hormones.
The researcher believes the brain needs at least ten days to recover after a long trip. He says airline workers told him their ability to remember got worse after working on planes for about four years. Other studies have shown that increased feelings of stress can cause a loss of cells in the part of the brain that controls memory.
Scientists say more tests are needed to study the effects of jet lag on the brain. They want to find out if too much jet lag could permanently (永久性的) affect memory.
67. According to the text, jet lag .
A. can cause difficulties in speaking
B. can make people feel tired for a few weeks
C. can be only found in flight attendants
D. can be caused by flying over several time zones
68. It can be inferred from the text that .
A. the conclusion is refused by many scientists
B. scientists fear that this research is not done properly
C. the scientific conclusion needs the support from many tests
D. every women who were examined in the research were mot healthy
69. From the result of the research we can see that .
A. the women who have longer rest at home show better memory
B. the women who fly in short time have smaller right temporal lobes
C. the women who have longer flights fail the memory test
D. the women who rest more than 14 days produce less hormones
70. What is the subject discussed in the text?
A. The cause of jet lag.
B. A story of a group of flight attendants.
C. The importance of having enough rest after flights.
D. A research about the effects of jet lag on the brain.
参考答案
67-70.D .C .A .D
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