16. americans believe that education is %t!FsOg`Ga_nm
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　　a. the only way to success

　　b. the main purpose of the schools

　　c. just like climbing ladders

　　d. important to success

　　17.which of the following is not mentioned as important to success？

　　a. intellectual achievement

　　b. competitive personality

　　c. social backgrounds

　　d. social and political skills

　　e. 18. a variety of extracurricular activities are added in american schools llectual achievement

　　f. competitive personality

　　g. social backgrounds

　　h. social and political skills

　　18. a variety of extracurricular activities are added in american schools

　　to help students climb the education ladder

　　to enrich students‘dull life at school

　　to help students become more successful in later life

　　to extend college education down into elementary schools

　　19. athletic activities are designed .Cr :*`:j]L?[ 此文转贴于我的学习网考研一方工程硕士 http://www.Gzu521.com]Cr :*`:j]L?

　　to make boys stronger

　　to teach students winning spirit

　　to develop students‘social and political skills

　　to improve the academic programs

　　20. which of the following can be the best title for this passage ？

　　education and success

　　extracurricular activities at school

　　athletic sports

　　intellectual achievement

　　questions 21-25 are based on the following passage ：/

　　people once widely believed that intelligent life existed on mars . the 19th-centruy discovery of what appeared to be geometric designs cut across the surface was taken as evidence. the lines were thought to have been a system of canals that had been built to irrigate the surface. it is now clear that the“canals”——perhaps the most spectacular geologic features of mars– are natural valleys where ancient rivers once flowed.

　　another fragmented idea concerns the planet‘s seasonal changes in color. once attributed to the rapid spred of some life-form， these shifts are now known to develop from the movement of fine dust in the atmosphere.

　　by the close of the 20thcentury none of the many experiments conducted by spacecraft had ever found persuasive evidence of life. nevertheless， speculation continued over the existence of some form of life ，in either the present of past. in 1996 scientists discovered organic compounds and minerals in a meteorite（陨石），consisting of martian rock， that collided with earth around 11，000 b.c. these compounds suggest that mars may have been inhabited by organisms more than three billion years ago.

　　21. why did people in the 19th century believe the existence of intelligent >