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11、Scientists have created ___ intelligent food wrapping material that．changes color if___ contents are going bad．

       A．an; 不填           B．不填; the             C．an; the                 D．the; 不填

10、I tried, but,__    ,to persuade Holmes to change his mind He was too stubborn．

       A．at ease             B．in trouble          C．by design          D．in vain

9、We ___ what gift we should send to our teacher when Todd came up with a good idea．

       A．argued about                                 B．had argued about

       C．were arguing about                           D．would argue about

8、    __at the news that her eyes rained tears．

       A．So was Rebecca sad                          B．So sad was Rebecca

       C．So sad Rebecca was                          D．Was Rebecca so sad

7、The film doesn't ___ audience because tile plot or love and marriage is rather common nowadays．

       A．apply to              B．appeal to              C．intend to              D．attach to

6、The idea ___ you can own land in a city and do what you like with it is simply ridiculous．

       A．that                  B．how               C．whether               D．which

5、After the earthquake the electricity supply failed, ___ the cooling system break down．

       A．having made           B, making                  C．made               D．to make

4、It is good that we have large national parks, ___ wildlife enjoys proper protection．

       A．whose                 B．which                   C．where             D．what

3、Nowadays an advanced diploma doesn't ____ that one can get a better job.

       A．compromise          B．confirm          C．deserve               D．guarantee

2、It shames me to say it, but I told a lie when ___ at me meeting by my boss

       A．questioning                                          B．questioned    

       C．to be questioned                                      D．having questioned