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课时提升作业(三十六) 选修8 Unit 5 Ⅰ. 单项填空 1. (2017·烟台模拟)Scientists say that there will be an resource if water in the world has been used up one day. A. appropriateB. alternative C. approximate D. another 2. We hard together to achieve our common goal these years—to build a cleaner, safer and healthier world. A. have been working B. are working C. work D. have worked 3. (2017·阜阳模拟)—What’s your feeling now? —I am terribly sorry. If only I here yesterday! A. came B. would have come C. have come D. had come 4. There is not much time left, butwe must get there on time. A. somehow B. somewhat C. however D. anyway 5. (原创) the technique of cloning humans would be safe and effective, would you be in favour of cloning humans in the future? A. Assumed B. Assuming C. To assume D. To be assumed 6. If he is determined to do a good thing, Guo Mingyi, known for his generosity in assisting poor people, will do so what others say. A. in spite of B. in terms of | 
