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共77道小题，约5670字。

　　河北定州中学2016-2017学年第一学期高二英语周练试题（一）
　　一、单项选择题
　　1． Life is always full of hardships. _______ a better life, we need positive energy.
　　A. Live                B. To live
　　C. Living              D. Lived
　　2． The biggest problem for most plants, which ________just get up and run away when threatened, is that animals like to eat them.
　　A. shall not              B. can't
　　C. needn't                D. mustn't
　　3． --- What do you think of a house supplied by Lovell ?
　　---- _______ you buy a home from Lovell, the company promises to buy it back at the same price after three years.
　　A. Should                B. Must
　　C. Could                 D. Would
　　4． As to the long-term effects of global warming some believe that the damage has been done, ___________________.
　　A. otherwise we take steps to map now
　　B. now that we take steps to map
　　C. whether we take steps to map now or not
　　D. unless we take steps to map now
　　5． A person who has slept well will have a clear mind and work efficiently in the daytime
　　______ people with sleep disorders find it difficult to concentrate during the day.
　　A. unless             B. while
　　C. if                 D. until
　　6． Manst first of all eat, drink, have shelter and clothing ________ it can pursue politics, science, art and religion.
　　A. until              B. unless
　　C. before             D. since
　　7． Will it be ages ______ he goes back to school? I'm so worried about him.
　　A. before               B. after
　　C. when                 D. as
　　8． ______ scientists have learned a lot about the universe, there is much we still don't know.
　　A. Once                B. Since
　　C. Though              D. Unless
　　9． ________the students came from different countries, they got along quite well in the summer camp.
　　A. While             B. Unless
　　C. Since             D. Until
　　10． There is only one more day to go          your favorite music group play live.