2017届高考英语一轮复习必备单词素材：Unit 20 New Frontiers（北师大版）_高考复习指南

2017届高考英语一轮复习必备单词素材：Unit 20 New Frontiers（北师大版）

　　13．He held on to a branch until we came to his rescue.

　　14．Of the two possibilities, the former seems more likely than the latter.

　　15．Jane was writing a letter and in the meanwhile Sam was watching TV.

　　Ⅲ.单句改错

　　1．He is working in a post office, and on the meanwhile he is a writer too. on→in

　　2．I doubt that they can swim across the river.that→whether/if

　　3．Aspirin (阿司匹林) is a certain cure of a headache.of→for

　　4．Before coming here, please call me on advance.on→in

　　5．He often came in conflict with his boss, so he resigned.in→into

　　6．I always prefer starting early, rather than leave everything to the last minute.leave→leaving

　　7.By next Sunday you have stayed with us for three months.you后加_will

　　8. After graduation for ten years, they are still

　　corresponding to each other.to→with

　　9．Time permits, I'll see you after the meeting.permits→permitting

　　10．Dedicated to raise money for the project, they have been working day and night.raise→raising

　　Ⅳ.课文缩写语法填空

　　I love talking about the future — and I am not the only one. Over the centuries, people have always wondered about the future. But for some people, ①thinking (think) about the future is not just ②for fun. They plan the future of the world for a ③living (live). These people are called futurologists. The future is now big business and many people will attend the seminar with dreams of starting new enterprises ④based (base) on the predictions they will hear. I clicked into the websites of a few futurologists and here's ⑤what they're predicting: By the year 2015, the clothing industry ⑥will_have_produced (produce) new types of material that will remain stainless no matter what you spill on them. Garments will also be so strong that they will never get old and ⑦worn (wear). By the year 2025, no one will die of ⑧starvation (starve) because there will be food for everyone. By the year 2030, development in biochemistry and medical science will have made ⑨it theoretically possible for us to live for at least 150 years. By the middle of the century, computers that are millions of times ⑩smarter (smart) than us will have been developed.