听材料，回答下列各题：

　　12、

　　A.Whether or not snowflakes can be analyzed.

　　B.How snowflakes are formed.

　　C.What causes a snowstorm.

　　D.Where the largest snowflakes can be found.

　　13、

　　A.She has never seen snow before.

　　B.She is conducting a research on snow.

　　C.She wants to make artificial snow.

　　D.She has just read about snowflakes.

　　14、

　　A.The shape of the dust particles in the air.

　　B.The relative humidity.

　　C.The temperature of the air.

　　D.The geography of the area.

　　15、

　　A.Inspect snowflakes more carefully.

　　B.Make a copy of the article.

　　C.Write down more information.

　　D.Draw diagrams of the different shapes.

　　Passage One.

　　听材料，回答下列各题：

　　16、

　　A.To explain a new requirement for graduation.

　　B.To interest students in a community service project.

　　C.To discuss the problems of elementary school students.

　　D.To recruit elementary school teachers for a special program.

　　17、

　　A.He advises students participating in a special program.

　　B.He teaches part-time in an elementary school.

　　C.He observes elementary school students in the classroom.

　　D.He helps students prepare their resumes.

　　18、

　　A.Contact the elementary school.

　　B.Sign up for a special class.

　　C.Submit a resume to the dean.

　　D.Talk to Professor Howard.

　　Passage Two.

　　听材料，回答下列各题：

　　19、

　　A.The use of oversized freight containers.

　　B.Safety problems with railroad tracks.

　　C.The growth of the automotive industry.

　　D.The high cost of meeting environmental regulations.

　　20、

　　A.To make the railway operation safer.

　　B.To offer passengers more comfortable journeys.

　　C.To meet the demand of shipping larger loads.

　　D.To connect the railway network with the highways.

　　21、

　　A.It contributes less to air pollution than truck industry.

　　B.Its competitors are inconsiderate of customers.

　　C.It preserves a traditional way of doing business.

　　D.It creates personal fortunes for investors.

　　Passage Three.

　　听材料，回答下列各题：

　　22、

　　A.They took objective tests.

　　B.They specialized in one subject.

　　C.They spoke instead of writing.

　　D.They were timed by electric clocks.

　　23、

　　A.Modem industry must have developed before the Middle Ages.

　　B.Modem industry must have developed around the 19th century.

　　C.Modem industry must have developed in Greece or Rome.

　　D.Modern industry must have developed machines to take tests.

　　24、

　　A.Objective tests.

　　B.Spoken tests.

　　C.Personal tests.

　　D.Subjective tests.

　　25、

　　A.The features of the exams in the Middle Ages.

　　B.How to perform well in both spoken and written exams,

　　C.How did the forms of exams evolve.

　　D.The different exams designed for people of different ages.

　　听力填空题

　　听材料，回答下列各题：

　　The northern Italian city of Milan banned all traffic from its streets for 10 hours on Sunday in an attempt to reduce smog.

　　The measure which was first _________26 on a trial basis in the year 2007 is triggered whenever pollution exceeds the statutory limit for 12 consecutive days.

　　Satellite _________27 shows Milan to be one of the most polluted cities in Europe. An _________ 28 120,000 vehicles will be affected by the move. according to the major daily newspaper in the city.

　　The most polluting vehicles have been banned fi'om driving through, the city center since Thursday. But on Sunday, there __________29 be no traffic between 8:00 and 18:00.

　　The ban is imposed when pollution exceeds 5030 of particulates per cubic meter of air over 12 days.The last time the full ban was in force was in February.

　　The move is not popular with all__________31 who argue that the city's public transport system should beimproved to _________32 their cars. Local Green Party councilor Enrico Fedrighini said cars with three or four people inside should be offered 33_________ , for example. "One or two car-free Sundays each month will not do anythingto 34 _________ the smog crisis," he told the daily newspaper in the city.

　　Public transport was to be bolstered during the day, with an extra metro trains and buses 35_________

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