第3部分：概括大意与完成句子(第23---30题，每题1分，共8分)
下面的短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第2～5段其中四段选
择1个最佳标题;(2)第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。
Screen Test
Every year millions of women are screened with X—rays to pick up signs of breast cancer.If this happens early enough，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.Als0，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 ll 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(NR—PB)predicted that the screening programme would cause 36 cancers per l00，000 women，180f 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”corn—pared 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 l00，000 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 resuits 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 Mi—chael Clark of the NRPB.But he warns that the study should be interpreted with caution.“0n the basis of the current data，for every lo 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.”
23.Paragraph 2————————————
24.Paragraph 3—————————————
25.Paragraph 4—————————————
26.Paragraph 5—————————————
A.Harm Screening May Do to a Younger Woman
B.Investigating the Effect of Screening
C.Effects Predicted by Two Different Models
D.Small Risk of Inducing Cancers from Radiation
E.Treatment of Cancers
F.Factors That Trigger Cancers
27.Early discovery of breast cancer may____________.
28.Advantages of screening women under 50 are ____________.
29.Delaying the age at which screening starts may____________.
30.Radiation exposure should be____________.
第4部分：阅读理解(第31～45题，每题3分，共45分)
下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。
31.What are the symbols of the Netherlands according to the first paragraph?
A.The flat landscape.
B.Wooden shoes and wooden windmills.
C.Metal-pole turbines.
D.Both A and B.
3 2.Which statement best describes the urban turbine mentioned in the second paragraph?
A.It is a windmill put on rooftops of buildings for energy generation.
B.It is a high—tech machine designed to generate energy for urban people.
C.It is light and quiet and therefore more efficient.
D.It is driven by urban wind.
33.The smallest models of an urban turbine___________.
A.is designed for private homes
B.weighs 2，000 kilograms
C.can be carried up to the rooftop without a crane
D.can be installed with a crane
34.Netherlands leads in the urban turbine technology because___________.
A.the Dutch are natural pioneers
B.the Dutch have a tradition with windmills
C.the Netherlands is windier than Germany，Finland and Slovenia
D.the Netherlands is a small country with a large population
35.According to the last paragraph，what are the advantages of wind power technology? A.It can be used for different purposes.
B.It can replace nuclear power plant.
C.It can be installed in one’s backyard.
D.Both A and C.
36.What IS Alvin?
A.A research institute.
B.A transporting vehicle.
C.A submersible.
D.A scientist.
37.Which of the following statements is NOT a fact about Alvin?
A.It can carry explorers as deep as 6，500 meters.
B.It has played a key role in various important undersea expeditions.
C.It was launched in the sixties of the twentieth century.
D.It has been used for more than 40 years.
38.“…a world that is still full of mysteries”refers to____________.
A.the earth
B.out space
C.the ocean
D.Mars
39.In what aspects are the new HOV and Alvin similar?
A.Size.
B.Speed.
C.Capacity.
D.Shape.
40.In what aspects are the new HOV and Alvin different?
A.Offering better views.
B.Speed.
C.Size.
D.Both A and b.
