题目

化合物H是一种合成治疗肥胖药物的中间体，其合成路线流程图如下： （1） B中含氧官能团的名称为 。 （2） F →H的反应类型是 。 （3） 写出化合物E(C11H16ClNO)的结构简式： 。 （4） 写出同时满足下列条件的B的种同分异构体的结构简式： 。①分子中只有5种不同化学环境的氢；②遇FeCl3溶液呈现紫色；③能够发生银镜反应。 （5） 写出以 和 为原料制备 的合成路线流程图 (无机试剂任用，合成路线流程图示例见本题题 完形填空 Friends play an important role in our life. Most people hope that their friends will always be there. They _1____ friendship to last forever. _2___, even the best friendship can end. As time goes by, many friendships end because of a(n) 3______ in personality or way of life. The friendship slowly loses importance and finally__4_____. Tommy wrote, “I didn’t even know the friendship was over until I caught myself thinking of Alan as a former friend.” Peter explained. “We _5____ seeing each other less and less. The friendship was just over.” Sometimes friendships__6____ suddenly from a disagreement or move to another place. Alice said, “The end of our friendship was a gradual thing. I moved from one side of the city to the other. Since then we __7___ made a phone call. We met less and less. At last our friendship ended.” Jack said, “ When I moved to Seattle after college, our friendship died. Both of us were always_8___ with new jobs, so we didn’t keep __9___ touch with each other. Our friendship was so dead that I didn’t call him__10___ I went home.” Yet the biggest problem to a friendship is change. Lillian Rubin in her book Just Friends say, “Generally it’s___11___ that friends will accept each other if they both remain what they were when they met, or change in similar directions. If they change or grow in different ways, the friendship most likely__12____ lost.” No matter why, when, or how friendships end, there is always__13___ pain of loss. When nothing can be_14___ to keep the friendship, it is important to forget the pain. Then move on__15___ new friendships. May new friendships bring you pleasure and happiness!1.A. hope B. expect C. decide D. prefer 2. A. Unfortunately B. Luckily C. Then D. So 3. A. interest B. experience C. change D. Suggestion4. A. forgets B. disappears C. appears D. improves 5. A. finished B. practiced C. continued D. started 6. A. break down B. break away C. break off D. break in 7. A. often B. seldom C. always D. never 8. A. struggling B. satisfying C. pleased D. fed9. A. at B. by C. on D. in 10. A. even if B. while C. before D. since 11. A. strange B. true C. false D. impossible 12. A. will be B. is C. will D. to be 13. A. little B. some C. any D. no 14. A. thought B. checked C. carried D. done 15. A. to ask for B. forming C. to build D. beginning