36.These national parks are very important for preserving many animals, who would ____ run the risk of becoming extinct.

　　A) otherwise

　　B) nevertheless

　　C) therefore

　　D) instead

　　37.They had an accident on the road and didn't ____ at their hotel until after midnight.

　　A) show off

　　B) check in

　　C) check out

　　D) drop out

　　38.After his leave Tom went back on duty to ____ his soldiers.

　　A) put in charge of

　　B) be charged with

　　C) be taken in charge by

　　D) take charge of

　　39.The three rows at the front are ____ for guests.

　　A) conserved

　　B) deposited

　　C) reserved

　　D) stored

　　40.One thing it's safe to say about robots is that anything you can write about them will already be ____ by the time it's read. That's how fast robot technology is developing.

　　A) out of order

　　B) out of date

　　C) out of control

　　D) out of sight

　　41.The autumn air felt ____ so he went to fetch a coat.

　　A) cool

　　B) severe

　　C) harsh

　　D) chilly

　　42.A managing director cannot expect to have much time to ____ to purely personal matters.

　　A) reserve

　　B) spare

　　C) concentrate

　　D) devote

　　43.His enthusiasm for the plan seems to have ____, for he never speaks about it any more.

　　A) worn off

　　B) got down

　　C) fallen out

　　D) used up

　　44.With the spring here you can ____ these ski boots till you need them again next winter.

　　A)put away

　　B)get rid of

　　C) give away

　　D)do away with

　　45.No artistic creation can achieve greatness if ____ from life.

　　A) resulted

　　B) escaped

　　C) divorced

　　D) shielded

　　46.The Petersons have a very ____ daughter. She is always running and jumping.

　　A) quiet

　　B) vigorous

　　C) naughty

　　D) mischievous

　　47.If you like a large print of your photograph we can blow it __A__ for you.

　　A) up

　　B) through

　　C) out

　　D) over

　　48.The speaker agreed to ____ from the position that he had just stated.

　　A) return

　　B) jump

　　C) withdraw

　　D) retreat

　　49.Some hobbies can only be ____ by rich people.

　　A) taken in

　　B) taken on

　　C) taken up

　　D) taken over

　　50.I think it is only by a ____ of imagination that you say you have seen a ghost.

　　A) pinch

　　B) lack

　　C) shortage

　　D) stretch