6. The ______at the military academy is so rigid that some people cannot endure it.

　　A. convention

　　B. confinement

　　C. principle

　　D.discipline

　　【答案】D

　　7. The machinery had been wrecked so efficiently that police were sure it was a case of______.

　　A. vagabond

　　B. sabotage

　　C. paradox

　　D.tachyon

　　【答案】B

　　8. The social workers tried to ____ the juvenile delinquents.

　　A. quarantine

　　B. muddle

　　C. rehabilitate

　　D. indent

　　【答案】 C

　　9.The scents of the flowers was ____ to us by the breeze.

　　A. intercepted

　　2B. detested

　　C. saturated

　　D. wafted

　　【答案】D

　　10. Tony stops him with news that a plane has ____ over the Mojave Desert.

　　A. blown down

　　B. blown off

　　C. blown up

　　D. blown in

　　【答案】C