课时作业5 Unit 5 Section Ⅰ Topic talk & Lesson 1（Word练习）-【优化指导】2022-2023学年新教材高中英语必修第二册（北师大版2019）

课时作业(5)　A卷　基础巩固 Ⅰ．单句语法填空 1．He behaved as if nothing had happened (happen)． 2．I won’t comment on/about this matter. 3．The news was a great shock to her. 4．In spring the place was crowded (crowd) with skiers. 5．Do you remember that time she picked up my daughter when I was ill? 6．I was frightened (frighten) at the sight of the snake. 7．The more we do for the people，the happier (happy) we will feel. 8．Every year a flood of farmers arrive in Shenzhen for jobs. 9．Don’t be too curious (curiosity) about things you’re not supposed to know. 10．At last the writer escaped (escape)，but his brothers didn’t. Ⅱ．完成句子 1．He was frightened to look down from the top of the tall building. 他不敢从那座高楼顶上往下看。 2．He was curious about Australian cities，so he read the book written by Dr. Johnson. 他对澳大利亚的城市很感兴趣，所以他读了约翰逊博士写的书。 3．Not all men are equal in ability . 人的能力不全一样。 4．The more you practise English,_the better your English will be. 你练习英语越多，你的英语就越好。 5．She talks and talks as if she would never stop . 她说了又说，好像永远停不下来。 Ⅲ．阅读理解 About 97% of the world’s water is salty and is found in our oceans and seas.But，as we can’t drink sea water，how can it be important? Every part of our seas and oceans contains an amazing number of animals and fish that live at different ocean depths.Most of the different species of animals and fish depend on simple plants for their food.These simple plants called algae(海藻)drift near the surface of the ocean and use sunlight to turn carbon dioxide and water into food and oxygen.In fact，the algae produce over half of the oxygen people breathe.How important sea water is! Each plant or animal in our seas and oceans is an important link in a food chain.The algae are eaten in large amounts by microscopic animals，which are in turn consumed by larger animals.These food chains are delicately balanced. The bad news about the food chains in the oceans is that they are under threat because of man.People once thought that the oceans were so big that it didn’t matter if we dumped ru