22、     we are developing new technology        such a high pace, the true challenge is to find new ways of using it.

       A．Because; with      B．Now that; at        C．Now that; with     D．Because of; at

21、The nutrients in        falls into the ocean will quickly become available to other living creatures.

       A．whichever           B．hat                      C．whatever             D．wherever

20、He thanked us for         them in carrying through the plan; otherwise, they       by the company.

       A．providing; could be fired                       B．encouraging; could have been fired

       C．a(chǎn)ssisting; would have been fired            D．persuading; would be fired

19、He invented a lot of things, many of        taken       granted by people.

       A．them; for            B．which; for           C．what; of              D．which; of

18、The folk song concert was so well      that all the tickets had been sold out on the first day.

       A．a(chǎn)ccepted              B．recognized           C．received              D．promised

17、After the trial, the judge passed judgment        her and she was sentenced       3 years in prison.

       A．to; to                  B．on; on                 C．on; to                  D．to; on

16、It is never easy to        big changes. Those who can do it faster are more likely to succeed.

       A．lead to                B．stick to                C．contribute to        D．a(chǎn)djust to

15、“I’d like to thank those       help my mother will survive her terrible disease,” said the woman.

       A．who                    B．whose                 C．with whose          D．with whom

14、I found them        at a table,        in thought.

       A．seated; losing       B．seated; lost          C．sitting; losing       D．sitting; being lost

13、It’s not likely to happen, but if it        , we need to be well prepared.

       A．should                B．would                 C．might                  D．could