课后提升训练(七) Section Ⅲ Discovering Useful Structures（Word练习）-【优化指导】2021-2022学年新教材高中英语必修第二册（人教版2019）

课后提升训练(七) Section Ⅲ　Discovering Useful Structures [对应学生用书P111] Ⅰ.单句语法填空 1．He was observed to_leave(leave) the room. 2．The pictures reminded me of my school days. 3．In these places patients can go to be near nature during their recovery(recover)． 4．She is_being_examined(examine) by the doctor now. 5．A new factory is_being_built(build) now. 6．The students are_being_taught(teach) English at present. 7．Tom is_being_praised(praise) by the teacher frequently. 8．The problem is_being_discussed(discuss) now. Ⅱ.将下列句子改为被动语态 1．Many people are always asking him silly questions. He_is_always_being_asked_silly_questions_(by_many_people)． 2．They are painting our classroom. Our_classroom_is_being_painted_(by_them)． 3．They are frequently disturbing us. We_are_frequently_being_disturbed_(by_them)． 4．Hunters are killing a lot of wild animals. A_lot_of_wild_animals_are_being_killed_(by_hunters)． 5．They are designing a new machine to improve production. A_new_machine_is_being_designed_to_improve_production_(by_them)． 6．The police are looking into the case. The_case_is_being_looked_into_by_the_police. 7．They are broadcasting the weather report. The_weather_report_is_being_broadcast_(by_them)． 8．We are making great progress these days. Great_progress_is_being_made_these_days_(by_us)． Ⅰ.阅读理解 More than two thirds of the world's polar bears will be wiped out by 2050, according to a shocking new study.By then，scientists say，global warming will have melted 42 percent of the Arctic sea ice.By 2100, only a very few of these important creatures will be left. The report has been produced by the US Geological Survey.The scientists have publicized their findings in the hope of influencing US Interior Secretary Dirk Kempthorne，who has been asked to put polar bears on the US endangered species list. Polar bears depend on floating sea ice as a platform for hunting seals, which are their main food.Without enough ice, polar bears would be forced to go onto the land, where they are poorly skilled hunter