Unit 7 The Sea
Lesson 2 Protecting the Sea
练习
一、根据句意和首字母提示补全句子，使句子完整正确
1 Something must be done to prevent our city from being p______ by thick smoke.
2 The b______ on smoking has come to effect—less people smoke in public now.
3 The train went slower and slower until it stopped a______.
4 A new man was appointed to h______ the crisis.
5 When p______ a speech in public，don't be nervous.
6 When we say someone is i______，we are praising him/her as a wise one.
二、用所给单词的适当形式填空
1 Sydney had five strategies：save energy，save water，reduce trash，prevent _______(pollute)，and protect the environment.
2 Modern ______(industry)civilizations make good use of time，energy and resources.
3 Its job is to help protect ______(agricultural)and other resources from threats and damage by wildlife.
4Plants can defend themselves by using both physical and ______(chemistry) means.
5It looks as if their core business is a ______(solve) to a nonexistent problem.
6Many reading disorders seem to have nothing to do with ______(intelligent)．
7Marion Cotillard won the Oscar for best ______(act)in “la Vie en rose”．
8Nowadays，almost every ______(explore)and mountain climber uses the Global Positioning System(GPS)to make their journeys safer.
三、单句改错
1 How to do with this problem is really a problem we have to discuss.
________________________________________________________________________
2 The police is looking into the cause of the accident.
________________________________________________________________________
3 It's quite difficult to find who's responsible of the pollution.
________________________________________________________________________
4 We should try to find a person to communicate.
________________________________________________________________________
5 That's why I want to find out.
________________________________________________________________________
6 Here is the book written by him of lots of pictures in it.
________________________________________________________________________
7 That sounds like very pleasing to the ear.
________________________________________________________________________
8 There are five for you to choose.
________________________________________________________________________
9 They were sitting around take turns to tell each other about their projects.
________________________________________________________________________
10 Why are you going to do for your sea project?
________________________________________________________________________
四、阅读理解
Ocean Noise Pollution
Some scientists say that animals in the ocean are increasingly threatened by noise pollution caused by human beings.
The noise that affects sea creatures comes from a number of human activities.It is caused mainly by industrial underwater explosions，ocean drilling，and ship engines.Such noises are added to natural sounds.These sounds include the breaking of ice fields，underwater earthquakes，and sounds made by animals themselves.
Decibels(分贝)measured in water are different from those measured on land.A noise of onehundredtwenty decibels on land causes pain to human ears.In water，a decibel level of onehundredninetyfive would have the same effect.
Some scientists have proposed setting a noise limit of onehundredtwenty decibels in oceans.They have observed that noises above that level can frighten and confuse whales.
A team of American and Canadian scientists discovered that louder noises can seriously injure some animals.The research team found that powerful underwater explosions were causing whales in the area to lose their hearing.This seriously affected the whales' ability to exchange information and find their way.Some of the whales even died.The explosions had caused their ears to bleed(出血) and become infected(感染)．
Many researchers whose work depends on ocean sounds object to a limit of onehundredtwenty decibels.They say such a limit is a greater danger than they believed.They want to prevent noises from harming creatures in the ocean.
1 According to the passage，which of the following is increasingly dangerous to sea creatures?
A．The sound of a car. B．The sound of voices.
C．Manmade noise pollution. D．The sound of steps.
2 According to the passage，natural sounds include all of the following EXCEPT ______.
A．sounds made by animals themselves
B．ocean drilling
C．underwater earthquakes
D．the breaking of ice fields
3 Which of the following is true of whales?
A．They won't be confused by noises.
B．They are deaf to noises.
C．Their ability to reproduce will be lowered by highlevel noises.
D．Their hearing will be damaged by highlevel noises.
4 According to the passage，what will scientists most probably do in the future?
A．They will work hard to reduce ocean noise pollution.
B．They will protect animals from harmful noises.
C．They will try to set a limit of 120 decibels.
D．They will study the effect of ocean noise pollution.
五、参照下面的步骤，完成某个海域污染状况的调查研究
1 Choose a group of four students to form a team.Each team has four members(editor，note taker，computer operator，and URL manager)．
2 Identify an area of ocean pollution that is troubling your group.
3 Conduct an Internet search.
4 Use a computer generated map to show geographic location of your selected polluted area.
5 I dentify the causes of the pollution.
6 Determine what effect this pollution has on the inhabitants of the water，land，and sea in the polluted area.
7 Contact officials via Internet，video conferencing，or written letters to see what the local government is doing to combat the pollution source.
8 Have your group come up with solutions to combat the pollution problems.
9 Create a newsletter that tells of your findings.
10 Present your findings to the class for videotaping.
参考答案
一、1. polluted 2. ban 3. altogether 4. handle 5. presenting 6. intelligent
二、1. pollution 2. industrial 3. agriculture 4. chemical 5. solution 6. intelligence
7. actress 8. explorer
三、1. do→deal 2. is→are 3. of→for 4. communicate后加with 5. why→what
6. 第一个of→with 7. 去掉like 8. choose后加 from 9. take→taking 10. Why→What
四、1. C
解析：由第一段可知，人类活动制造的噪音污染正日益对海洋生物产生危害。
2. B
解析：由第二段可知，ocean drilling属于manmade noise。
3. D
解析：由第五段中的“...were causing whales in the area to lose their hearing.”可知，高分贝的声音会损伤鲸鱼的听力。
4. B
解析：由最后一段可知，科学家们想要努力保护海洋生物免受噪音的伤害。
五、 略
本文来源：https://www.2haoxitong.net/k/doc/feb823ae88eb172ded630b1c59eef8c75fbf95ad.html
文档为doc格式