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 Jack wasn’t saying anything，but the teacher smiled at him ________he had done something very clever．

A．a(chǎn)s if                                          B．in case

C．while                                               D．though

 US President Barack Obama ________ a national speech at the 10th anniversary of 9/11 terror attacks．

A．a(chǎn)ddressed                                    B．delivered

C．spoke                                          D．recited

 Mistakes don’t just happen; they occur for a reason. Find out the reason, and then making the mistake becomes ______.
A. favorable        B. precious          C. essential      D. worthwhile

－It’s necessary to limit the speed of electric bikes.

－Yes, most riders of electric bikes in China 　　　 40-50 kilometers per hour often ignore red lights, 　　　 the risk of traffic accidents.

A. reaching; increase 　　　　　　　　　　　　 B. reach; increase

C. to reach; to increase D. reaching; increasing

—Well，I do think the ipod is smart, convenient and intelligent．

—________．

A．So it is 　　　　　　　　　　　　　　　　　　　 B．So is it

C．So does it D．So it does

— Did you hear about Zhang Lili who saved the kids from being run over by a school bus?

— Yes. What do you think most people _____ if they were in a similar situation?

　 A. will do B. will have done.　 　　

C. would do D. would have done

— How do you think I can make up with Johnson?

— Set aside ______ you disagree and try to find ______ you have in common.

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

-----Can I ask you a few straightforward questions about yourself?

------No problem. I like______ when people are open and direct.

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

—My family usually holds a big party for my birthday, but I want to try a different way this year．

— 　.

　　　 A．Go ahead．　 B．Come along!　　 C．Like what?　 　 D．So what?

 _______Olympic torch has reportedly stayed alight throughout _____varied extreme weather conditions in a German testing center.

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