The plain occupies the west,south and central parts of the continent,though considerable variations are to be found over so( )an area.

　　A expensive

　　B expansive

　　C extensive

　　D intensive

　　正确答案：C

　　When two people feel the same about each other,their feelings are( ).

　　A visible

　　B common

　　C joint

　　D mutual

　　正确答案：D  

　　The homeless make up a growing percentage of America’s population.Furthermore homelessness has reached such proportions that local government can’t possibly_____.

　　A stand

　　B cope

　　C approve

　　D retain

　　正确答案：B  

　　Theories focusing on the role of society suggest that children commit crimes in( )to their failure to rise above their socioeconomic status,or as a rejection of middle‐class values.

　　A return

　　B reply

　　C reference

　　D response

　　正确答案：D

　　Such changes show that selection and evolution can be controlled,to a certain( ),by man.In fact,changes are continually taking place in all livingthings,and new varieties are constantly developing.

　　A advantage

　　B purpose

　　C effect

　　D extent

　　正确答案：D  

　　The time for the general offensive was approaching.The commander’s order soon came( )all civilians should evacuate the village.

　　A when

　　B before

　　C as

　　D that

　　正确答案：D  

　　She opened the packet and emptied its( )into saucepan.

　　A contents

　　B content

　　C consent

　　D contend

　　正确答案：A

　　Mercury’s( )is so much greater than the Earth’s that it completes more than four revolutions around the Sun in the time it takes the Earth to complete one.

　　A velocity

　　B orbit

　　C weight

　　D diameter

　　正确答案：A

　　The( )of the speech contest is made up of four professors and a famous broadcaster.

　　A committee

　　B board

　　C panel

　　D leadership

　　正确答案：C

　　I had to stand in a( )for hours to get tickets for the film.

　　A row

　　B procession

　　C tail

　　D queue

　　正确答案：D

　　Making friends is extremely important to teenagers,and many shy students need the admission of some kind of organization with a supportive adult( )visible in the background.

　　A particularly

　　B barely

　　C definitely

　　D rarely

　　正确答案：B  

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