5.LaMar Baylor,an American performer in the Broadway musical,spends most of his time in New York City.But since 2011,he has also spent weeks in Kigali,the capital of Rwanda.There,he teaches dance to boys who live on the street.His teaching is part of an effort by the Rebecca  Davis Dance Company.The project helps young people learn more about dance and learn how to  behave in a classroom environment.
    Rebecca Davis and LaMar Baylor teach ballet to street children in Kigali,Rwanda.The  children have lost all of their families.Some have been in prison; others have sold their bodies for sex.Dance classes provide the children with structured learning and self-expression that they've never had before.
    Rebecca Davis is the founder and director of the dance company.She got the idea for the project after visiting Rwanda in 2008.There she met a large number of street children who were dancing,and she thought that dance could be used to get them off the street and into a safe place.She believes that learning to dance is a step toward education.She says children can take classes in information and technology after they have learned to attend classes and follow directions.
    Boys who have done best in the classes win scholarships and are sent to the Sunrise Boarding School.About 30 boys have won this kind of financial aid.
    As for LaMar Baylor,he knows from his own experience how dance can lead to a better life.He is from Camden,New Jersey.Camden has sometimes been called America's poorest and most dangerous city.He now thanks dancing for saving his life.
    The Rwanda program is the largest one set up by the Rebecca Davis Dance Company,and Ms.Davis has also set up dance programs in Bosnia-Herzegovina and Guinea.About 2,000 children in the three countries have taken part in the project since it was begun in 2010.
21.The dance project aims toC.
    A.give the street children parental care
    B.provide scholarship for the street children
    C.help the street children receive some education
    D.keep the street children in good health
22.What do we learn about the street children from the passage?B
    A.All of them can be sent to the Sunrise Boarding School.
    B.It may be hard for them to adapt to classroom rules at first.
    C.They only take classes in dancing.
    D.Many of them have been in prison.
 23.What LaMar Baylor and the street children in the project have in common is thatA
    A.they all benefit from dancing
    B.they borrowed money from the project
    C.they learn to express themselves in dance class
    D.they were homeless at one time
 24.We can infer from the last paragraph thatD.
    A.the dance project was started in Guinea
    B.the Rwanda program is the first program by Rebecca Davis
    C.the Rwanda program has attracted about 2,000 children
    D.the dance project gains popularity and grows quickly.
2.1.Why do airplanes take longer to fly west than east?
It can take five hours to go west-east from New York (NY) to London but seven hours to travel east-west from London to NY.The reason for the difference is an atmospheric phenomenon known as the jet(喷射)stream.The jet stream is a very high altitude wind which always blows from the west to the east across the Atlantic.The planes moving at a constant air speed thus go faster in the west-east direction when they are moving with the wind than in the opposite direction.
2.What would happen if the gravity on Earth was suddenly turned off?
Supposing we could magically turn off gravity.Would buildings and other structures(建筑物)float away?What happened would depend on how strongly the things were attached to the Earth.The Earth is moving at quite a speed,moving at over a thousand miles per hour.If you turn something around your head on a string(细绳),it goes around in a circle until you let go of the string.Then it flies off in a straight line.‘Switching off'gravity would be like letting go of the string.Things not attached to the Earth would fly off in a straight line.People in buildings would suddenly shootupwards at a great speed until they hit the ceiling.Most things outside would fly off into space.

60.What information can we get from the first passage?A
A.It is the jet stream that affects how fast airplanes fly.
B.Planes go slower when they are moving with the wind.
C.It takes more time to fly from NY to London than from London to NY.
D.The jet stream always blows from the east to the west across the Atlantic.
61.The word"shoot"underlined in the 2nd passage probably means"B".
A.send for                                         
B.move quickly
C.come out                                        
D.grow quickly
62.It can be inferred that without gravityB.
A.buildings and other structures would float away
B.trees and buildings would not so easily fly off
C.something around your head would not float away
D.everything outside buildings would fly off into space
63.Where can we most probably read this text?D
A.In a research paper.
B.In a short story.
C.In a travel magazine.
D.In a student's book.
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