第一部分 选择性必修第一册 Unit 3 CONSERVATION（Word练习）-【优化指导】2024高考英语一轮复习高中总复习·第1轮（北师大版 新教材 新高考）

Ⅰ.课文语法填空——复习本单元LESSON 1部分 Extinctions，where entire species are wiped out，are not 1.unusual(usual) in our Earth's history.In fact，over 90 percent of all species 2.that ever lived are now extinct.In the last 500 million years，there 3.have_been(be) five times when life on Earth has almost ended，4.including(include) the third mass extinction，known as the “Great Dying” and the fifth event.The 5.reasons(reason) for extinctions are varied.Many scientists say we are now entering the Earth's sixth mass extinction.This time，human activity will be 6.to_blame(blame). A 2015 study by scientists found that human activity is causing species to die out 1，000 times 7.faster(fast) than normal.8.It is clear that human activity has negatively affected all other species on Earth，including animals and plants.If a 9.sixth(six) mass extinction occurs，scientists who have studied the issue believe that up to three quarters of all species on Earth could die out and we would also be 10.at risk of dying out.In short，if we want to survive，we need to stop destroying the planet that we live on and start to protect it. Ⅱ.单元写作增分练——运用本单元词汇和句式，提高语用能力 关于如何处理临期食品的建议 1．超市有大量食品接近保质期的情况并不罕见。(It is not unusual for sb./sth.to do sth.) It_is_not_unusual_for_supermarkets_to_have_large_amounts_of_food approaching expiration date. 2．如果没有合适的方法来处理这些食品，可能会浪费大量的食品和钱。(without引导含蓄虚拟条件句) Without_a_proper_way_to_deal_with_the_food，there might be a great waste of food and money. 3．有些人建议进行一次特卖，而另一些人则建议捐赠给有需要的人。(while连接并列句) Some people propose a special sale while_others_suggest_donating_the_food_to_people in_need． 4．有些老人住在离超市很远的地方，他们去那里买食物会花很多时间。(It takes sb.some time to do ...) Some old people live far away from the supermarket and it_will_take_them_much_time_to get_there_to_buy_food． 5．与其在超市卖，工作人员不如把食物送到他们家里。(instead of doing ...) Instead_of_selling_in_the_supermarket，the workers might as well deliver the food to their homes. 6．如果是这样，老年人就不需要走很长一段路才能得到他们想要的东西了。(have to) If so，the elderly won't have_to_walk_a_long_dista