河北省定州中学2016-2017学年高二上学期周练（8.28）英语试题

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 make up now B. now that we take steps to make up C. whether we take steps to make up now or not D. unless we take steps to make up 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. Mankind must