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20、--What took you so long?

--I got lost．I have no ________of direction．

A．sense         B．idea      C．feeling     D．a(chǎn)bility

19、China opened its door to the outside world in 1978．______that had far-reaching effects．

A．Did a new development come then    B．Came then a new development

C．Then came a new development        D．Then did a new development come

18、_____and we’ll get everything ready for the taking off．

A．Have one more hour                 B．One more hour

C．Given one more hour                D．If I have one more hour

17、Doctors are concerned that the children ___________too much time in front of the TV don’t get enough exercise．

A．those spend    B．who spend    C．to spend     D．spend

16、The next moment，_____she had time to realize what was happening，she was hit over the head．

A．since          B．when         C．before        D．a(chǎn)fter

15、--I let my secretary call you several times．Do you know that?

--I _________in a meeting．I’m sorry．

A．had been        B．was          C．a(chǎn)m            D．have been

14、The newspaper says that all construction work for the Beijing Olympics _____by 2007.

A．has been completed               B．has completed

C．will have been completed          D．will have completed

13、--This is for you．

--You __________have! I don’t know how to thank you．

A．mustn’t    B．couldn’t    C．needn’t    D．shouldn’t

12、--Do you think ___________worthwhile to go all the way to Los Angles to buy that computer?

--Well．I’m going to visit some relatives，too．

A．it           B．／          C．this         D．that

11、________parents may have a stronger desire to see their children step into the world of _________.

A．Poor；rich   B．The poor；rich   C．Poor；the rich   D．The poor；the rich