正确答案: B

chair of the American Cancer Society

题目：Dr. Alpa Patel was__________.

解析：【答案】 B【解析】根据文章第四段Dr．Alpa Patel的描述可知只有选项B的“美国癌症协会的主席”符合文意。

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学习资料的答案和解析：

[单选题]The forty years from the 1930s to the 1970s was an important period

根据材料，完成下面的题目。Air Transportation1. Airplanes are used to carry passengers, cargo and mail. Air transport companies operate scheduled airlines and non-scheduled services over local, regional, national, and international routes. The aircraft operated by these companies range from small single-engine planes to large multiengine jet transports.2. The first air passenger services began in 1910, when dirigibles began operation between several German cities. The first scheduled airplane service to carry passengers began in the U. S in 1914. Several experimental airmail flights took place in India, Europe, and the United States before World War I, but air transport service did not become a true business until after the war.3. During World War Two, intercontinental air transport became firmly established. After the war the new long-distance transports with advanced facilities were increasingly able to avoid storms and strong wind and make flights more economical and consistent. A new generation of "jumbo-jet" transports began operations in 1970, and the supersonic transport entered passenger service in 1976.4. During the 1970s the number of domestic passengers on U. S airlines increased about 78%, and during the 1980s the figure was up about 58%. In 1990 there were 41.8 million international passengers, the figure was a 75% increase over 1980. The total cargo flown by U. S airlines almost doubled during the 1980s, from 5.7 billion to 10.6 billion ton-miles in 1990.5. Major airports provide a wide range of facilities for the convenience of millions of travelers. These range from such basic services as ticket-sales counters and restaurants to luxury hotels, shopping centers and play areas for children. International airports must also have customs areas and currency exchange counters and so on.Paragraph 2__________.

to provide different services

解析：【答案】D【解析】从第三段可知，在19世纪30年代到70年代，出现了国际航班，远距离运输服务，以及新一代“喷气机”运输和超音速运输服务，由此可知，这一时期开始提供多种不同类型的运输服务。所以本题选D。

[单选题]quantity

回答下面的题目：Traffic in Uur CitiesTile volume of traffic in many cities in the world today continuesto expand．This causes many problems，including serious air pollution，lengthydelays，and the greater risk__________ (51)accidents．Clearly，something must be done，but it is often difficult to persuade people to__________ (52)theirhabits and leave their cars at home．One possible__________ (53)is to make it more expensive for peopleto use their cars by__________ (54)charges for parking and__________ (55)tougherfines for anyone who__________ (56)the law．In addition，drivers could be required to pay for using particular routes atdifferent times of the day．This system，__________ (57)as“road pricin9”，is alreadybeing introduced in a__________ (58)of cities，using aspecial electronic card__________ (59)to the windscreen of the car．Another way of__________ (60)with the problem is to provide cheapparking on the__________ (61)of the city，and strictly control the number ofvehicles allowed into the centre．Drivers and their passengersthen use a special bus__________ (62)for the final stage of their journey,Ofcourse．the most important__________ (63)is to providegood public transport．However，toget people to__________ (64)the comfort of their cars，publictransport must be felt to be reliable，convenient andcomfortable，with fares__________ (65)at an acceptablelevel．

解析：根据句意，“道路收费”系统已经被引入一些城市来使用，a number of表示“一些”，符合句意，为正确答案。A项a quantity of表示“大量”，可修饰可数和不可数名词，但侧重大批量计算，含精确测量的意味；B项；total of表示“总计”，a sum of表示“合计，总数”，均不符合句意，故选D。

[单选题]fixed

回答下面的题目：Traffic in Uur CitiesTile volume of traffic in many cities in the world today continuesto expand．This causes many problems，including serious air pollution，lengthydelays，and the greater risk__________ (51)accidents．Clearly，something must be done，but it is often difficult to persuade people to__________ (52)theirhabits and leave their cars at home．One possible__________ (53)is to make it more expensive for peopleto use their cars by__________ (54)charges for parking and__________ (55)tougherfines for anyone who__________ (56)the law．In addition，drivers could be required to pay for using particular routes atdifferent times of the day．This system，__________ (57)as“road pricin9”，is alreadybeing introduced in a__________ (58)of cities，using aspecial electronic card__________ (59)to the windscreen of the car．Another way of__________ (60)with the problem is to provide cheapparking on the__________ (61)of the city，and strictly control the number ofvehicles allowed into the centre．Drivers and their passengersthen use a special bus__________ (62)for the final stage of their journey,Ofcourse．the most important__________ (63)is to providegood public transport．However，toget people to__________ (64)the comfort of their cars，publictransport must be felt to be reliable，convenient andcomfortable，with fares__________ (65)at an acceptablelevel．

joined

解析：befixed to…表示“被固定在……上”，文中是说“固定在汽车的挡风玻璃上”，所以选A，而其他三项都不符合句意。

[单选题]Paragraph 5_____

回答下面的题目：Screen TestEvery year millions of women are screened with X-rays to pick up signs of breast cancer．If this happens early ecough, the disease can often be treated successfully．According to a survey published last year, 21 countries have screening programmes．Nine of them, including Australia, Canada, the US and Spain, screen women under 50.But the medical benefit of screening these younger women are controversial, partly because the radiation brings a small risk of inducing cancer．Also, younger women must be given higher doses of X-rays because their breast tissue is denser.Researchers at the Polytechnic University of Valencia analysed the effect of screening more than 160,000 women at 11 local clinics．After estimating the women’s cumulative dose of radiation, they used two models to calculate the number of extra cancers this would cause.The mathematical model recommended by Britain’s National Radiological Protection Board (NRPB) predicted that the screening programme would cause 36 cancers per 100,000 women, 18 of them fatal．The model preferred by the UN Scientific Committee on the Effects of Atomic Radiation led, to a lower figure of 20 cancers.The researchers argue that the level of radiation-induced cancers is “not very significant” compared to the far larger number of cancers that are discovered and treated．The Valencia programme, they say, detects between 300 and 450 cases of breast cancer in every 100,000 women screened.But they point out that the risk of women contracting cancer from radiation could be reduced by between 40 and 80 percent if screening began at 50 instead of 45, because they would be exposed to less radiation．The results of their study, they suggest, could help “optimise the technique” for breast cancer screening.“There is a trade-off between the diagnostic benefits of breast screening and its risks.” admits Michael Clark of the NRPB．But he warns that the study should be interpreted with caution．“On the basis of the current data, for every 10 cancers successfully detected and prevented there is a risk of causing one later in life．That’s why radiation exposure should be minimised in any screening programme.”Paragraph 2_____

Small Risk of Inducing Cancers from Radiation

[单选题]请在第_______处填上正确答案。

根据以下资料，回答下面的题目。Chicken Soup for the Soul：Comfort Food Fights Loneliness 请在第_______处填上正确答案。

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