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大学综合英语教程2 李荫华课文_大学教材课后答案网

Unit 3
四、练习答案
Comprehension
CONTENT QUESTIONS
1.They'd like to stop such changes and go back to what they see as a purer and simpler age.
2.Life was nasty, brutish, and short.
3.The force of competition would still bring about advances in technology.
4. It's impossible to prevent science and technology from further development. Because the forceof competition will bring about technological advances, and one cannot stop inquiring minds fromthinking about basic science.

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资料下载：李荫华《全新版大学英语综合教程》课后答案及全文翻译

Unit 8
四、练习答案
Comprehensive Exercises
I.Cloze
1.Text-related1 ) complex2) idle
3 ) make a living by
4) accumulated

全新版大学英语第二版李荫华_教材课后答案的网站

Unit 7
二、课文精解
7.If life is about survival of a species—and intelligence is meant to serve that survival—then wecan't compare with pea-brained sea turtles，which were here long before us and survived thedisaster that wiped out the dinosaurs.如果生命关乎物种的生存——而智能是为生存服务——那么我们根本无法与大脑只有豌豆大小的海龟相提并论，海龟早在人类出现之前很久便已存在，并经历了使恐龙灭绝的重大灾难而生存下来。
句中if记|导的是条件状语从句。
在if引导的条件状语从句中，如果从句谈论的是一个有可能发生的事实及其产生的相关的结果，主句用一般将来时态，从句用一般现在时态。
例: We can walk there if we can't find a bus.
If it rains tomorrow, we will not go to the zoo.

资料下载：李荫华《全新版大学英语综合教程》课后答案及全文翻译