Unit5 Starting out & Understanding ideas 提升练习高中英语外研版（2019）选择性必修第二册 .doc

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1、Unit5 Section A Starting out & Understanding ideas一、完成句子1.我很吃惊他会想出如此好的主意。I was amazed that he such a sweet idea. 2.当去掉脂肪和盐,食物就少了些味道。When fat and salt food,the food tastes as if it is missing something. 3.今年,选择这一学科的学生人数减少了30%。This year,the students who choose this subject . 4.尽管我们都

2、很担心,结果一切都顺利。Despite our worries,everything well. 5.他明确表示他对这门学科不感兴趣。He he was not interested in the subject. 6.别的国家不能参加,奴隶和妇女也不能参加!No other countries could join in, slaves or women! 二、阅读理解Plants are boring.They just sit there photosynthesizing(光合作用) while animals have all the fun.Right

3、?Not so much.A new study has found that there is a long history of interactions between ants and plants.The ant and plant co-evolution (协同进化) started with ants feeding on plants and plants evolving ant-friendly features.Plants make a number of different structures that are specific for ant use.Some

4、plants have evolved features that persuade ants into defending them from attack from other insects and even mammals.These include hollow thorns that ants will live inside,or extra nectar(琼浆) on leaves or stems for the ants to eat.Some ants will just cheat and take the nectar and run,but some will st

5、ick around and attack anything that tries to hurt the plant.Other plants get ants to help them move their seeds around,by providing them with rich food packets attached to the seeds.The ant will pick up the seed and carry it away,eat the food packet,and leave the seedoften in a nutrient-rich area wh

6、ere itll grow better,and since its farther away from its parent,it wont have to compete for resources.But scientists werent sure how the evolutionary relationship between ants and plants got started.If evolution is an arms race between species developing ways to make use of their neighbours,then sci

7、entists wanted to know whether plants or ants fired the first shot.It was a chicken-and-egg question,whether things started with ants developing behaviours to take advantage of plants,or plants evolving structures to take advantage of ants.The history of ants and plants evolving together goes back t

8、o the time of the dinosaurs,and its not easy to tell from fossils who fired the first shot.However,it is a question of little significance.Scientists say their study matters because it provides a look at how these widespread and complex interactions evolved.1.Some plants attach food packets to their

9、 seeds in order to. A.reward the antsB.make a fool of antsC.provide nutrition for the seedsD.get the seeds moved around2.What does Paragraph 2 mainly tell us?A.How plants and ants interact.B.What ants do to protect plants.C.How plants and ants survive attacks.D.Why plants and ants need co-evolu

10、tion.3.Which is true about the evolutionary relationship between ants and plants?A.Ants depended more upon plants.B.It caused a race for better evolution.C.How it got started was uncertain.D.It was of little value for future studies.4.Whats the authors purpose of writing the passage?A.To introduce a

11、 science research method.B.To inform readers of a latest research finding.C.To arouse readers interest in science research.D.To criticize peoples traditional views about plants.三、应用文写作假如你是李华,正在一所美国学校参加暑期夏令营,遇到一些学习或生活上的困难,希望得到学校辅导中心Learning Centre的帮助,根据学校规定,你须书面预约,请按照下列要点写一封信:1.本人简介;2.求助内容;3.预约时间。注意:

12、1.词数80词左右;2.开头和结尾已给出,不计入总词数;3.可以适当增加细节,以使行文连贯。Dear Sir or Madam,I am Li Hua,    Yours,Li Hua四、读后续写A friend of mine whose name was John Smith had a bad memory,which made him famous.He was so forgetful that he sometimes forgot what he was talking about in the middle of a sentence.H

13、is wife had to constantly remind him about his meetings,his classeseven his meals!Once he forgot he had eaten breakfast twice,at home and at school.His wife liked to remind her neighbours,“If John didnt have his head tied on,he would forget that too!” Since Smith was a professor at a well-known univ

14、ersity,his forgetfulness was often an embarrassment to him.It wasnt that he was not clever,as some critical people tended to say,but just very very absent-minded.One hot summer day,Professor Smith decided to take his children to a seaside town about a three-hour train ride away.To make the trip more

15、 interesting for his young children,he kept the name of the town a secret.However,by the time they arrived at the station,Smith forgot the name of the town he was planning to visit.Luckily,a friend of his happened to be in the station.He offered to take care of the children while Smith hurried back

16、home to find out where he was going.The professors wife was surprised to see him again so soon.“Oh,my dear,I forget the name of the town.”“What?You forget the name?Maybe one day you will forget my name!Now Ill write the name of that town on a piece of paper,and you put it in your pocket and please,p

17、lease dont forget where you put it.”Satisfied that she had solved the problem,she sent her husband off again.Ten minutes later she was astonished to see him outside the house for the third time.注意:续写词数应为150左右。“What is the matter now?” asked his wife.     Hearing the cry,out

18、rushed their neighbours,trying to find out what had happened.   一、完成句子1.had come up with2.are removed from3.have decreased by 30%4.turned out5.made it clear that6.nor could二、阅读理解1.D 细节理解题。根据文章第二段中“Other plants get ants to help them move their seeds around,by providing them with rich f

19、ood packets attached to the seeds.”可知,选D项。2.A 推理判断题。根据文章第二段中“Plants make a number of different structures that are specific for ant use.”和“Some ants will just cheat and take the nectar and run.by providing them with rich food packets attached to the seeds.”可知,第二段主要讲了植物和蚂蚁如何互动,故选A项。3.C 细节理解题。根据文章倒数第二

20、段中“But scientists werent sure how the evolutionary relationship between ants and plants got started.”由此可知C选项描述正确,故选C项。4.B 写作意图题。第一段中“A new study has found that there is a long history of interactions between ants and plants.”是全文的主题句,由此推断出,作者写这篇文章的目的是告知读者最新的研究结果,故选B项。三、应用文写作Dear Sir or Madam, Im

21、 Li Hua,a Chinese student taking the summer camp in your university.Faced with so much difficulty,Im writing the letter to you to ask you for some help. I came here last month and found my courses interesting.But I have some difficulties with note taking and I have no idea of how to use the lib

22、rary.I was told the Learning Centre provides help for students and Im anxious to get help from you.I have no class on Tuesday mornings and Friday afternoons.Please let me know which day is OK with you.You may email or phone me.Look forward to your reply.Yours,Li Hua 四、读后续写“What is the matter no

23、w?” asked his wife.“I just cant remember why I come back and where I am supposed to be going on such a hot summer day,” replied the professor.However,the real reason was that he forgot where he had left his children.Sensing something wrong,Mrs Smith didnt believe his words,because whenever he told a

24、 lie,he would usually blink his eyes quickly.“Tell me the truth,” ordered his wife.“As you told me,I didnt forget where I put the name of that town,but I forget the station where I left our children!” whispered the professor,his voice trembling.“What a bad memory!” shouted his wife.Hearing the cry,o

25、ut rushed their neighbours,trying to find out what had happened.A fight between the couple was about to start when the professors cell phone began to ring.His friend,whose patience had worn out,phoned to complain.The professor apologised,got into his car and drove away,leaving behind a bunch of people outside the house.Being afraid that he would make matters worse again,Mrs. Smith decided to follow him,who then called a taxi.By the time she caught up with her husband,their children had been already back home safe and sound.第11页（共11页）