Workbook Unit 8 Answers

UNIT 8

Exercise 1

1.      I want to take a course in nutritional science because I’m interested in how diet can affect people’s health.

2.      I’d prefer not to study archaeology, as I’m more interested in modern life than life in the past.

3.      I’d really like to work in radio and television, so I’m thinking of taking a course in broadcasting.

4.      I’m an artistic type, so I’d rather study something like fashion design or interior design than study economics.

Exercise 2

A

Possible Answers

2. Would you rather study part time or full time?

3. Would you prefer to have a boring job that pays well or an exciting job that pays less?

4. Would you prefer taking a long vacation once a year or several short vacations each year?

B

Your own answers

Exercise 3

Your own answers

Exercise 4

Possible answers

1.      I’d rather stay home than go out because I rarely get to spend time at home.

2.      I’d prefer to have a cat because I’m not home enough to have a dog.

3.      I’d rather live in a house than live in an apartment building because I like to have a garden.

4.      I’d rather invite them over for dinner than take them out to a restaurant. I love to cook, but don’t get to do it that often.

5.      I’d prefer to see a new film at a movie theater than wait to see it on DVD because it’s more exciting on the big screen.

Exercise 5

A

Your own answers

B

1.      There are between 1.5 and 1.9 million homeschoolers in the United States today.

2.      Some parents prefer teaching their own children because they do not believe that public schools teach the correct religious values; others believe they can provide a better education for their children by teaching them at home.

3.      The Gutersons start with their children’s interests and questions.

4.      Critics say that homeschoolers are social outsiders who might be uncomfortable mixing with other people in adult life. Critics also say that most parents are not well qualified to teach.

C

Your own answers

D

Your own answers

Exercise 6

Possible answers

2. A good way to keep in touch with old friends is by using email.

3. You can make new friends by going out more often.

4. The best way to save money is by not eating out.

5. You could stay in shape by joining a sports club.

6.  I stay healthy by exercising regularly.

7. One way to learn discipline is by studying a martial art.

Exercise 7

1.      Diana shows her concern for others by volunteering to help people with AIDS.

2.      My parents’ love of art, poetry, and music taught me artistic appreciation from a very young age.

3.      I learned courtesy from my parents. They taught me the importance of being polite to both family and friends.

4.      Barbara always gets upset with people who disagree with her. I wish she would show more tolerance.

5.      I recently joined a choir, and I love it. But you need a lot of perseverance, because you have to practice the same piece of music for weeks before you’re ready to perform it!

Exercise 8

1.      John is very good at most school subjects, but he has no interest in being “the best.” Instead, he is very kind and helpful. The world would be a better place if everyone showed as much cooperation as John.

2.      Felix finds school very hard, but no one tries harder than he does. He always spends the whole weekend in the library trying to keep up with his studies. He shows great perseverance.

3.      Betsy always wants to do better than everyone else. In school, she always tries to get the best grades. Her favorite sport is badminton because she’s the best player in the school No one needs to teach Betsy competitiveness.

4.      Andrea has more creativity than any of her classmates. She writes fascinating stories that show she has a wonderful imagination. She’s also very artistic and does very interesting paintings.

Exercise 9

Your own answers

Workbook Unit 7 Answers

UNIT 7

Exercise 1

2. The taste of our drinking water has been ruined due to additives, such as chlorine.

3. Mysterious new illnesses have been caused by agricultural pesticides.

4. Agricultural crops such as fruits and vegetables are being destroyed because of traffic pollution.

5. Extremely dangerous chemicals are being released by factories.

6. People’s health in many large cities has been damaged as a result of smog.

7. Bigger deserts and more droughts have been created because of reduced rainfall.

8. Forests and wildlife are being harmed through global warming.

Exercise 2

Verb                        Noun                               Verb                 Noun

contaminate             contamination                 educate             education

contribute                contribution                     pollute             pollution

create                       creation                          protect             protection

deplete                    depletion                         reduce             reduction

destroy                    destruction                      threaten            threat

B

Your own answers.

Exercise 3

2. One way to inform the public about factories that pollute the environment is through educational programs on TV.

3. The ozone layer has been destroyed more in the southern hemisphere than in the northern hemisphere.

4. Agricultural sprays are damaging the soil in many countries.

5. Poverty is an enormous problem in many large cities where whole families can only afford to live in one room.

Exercise 4

A

Your own answers

C

1. True

2. False. The plastic used in credit cards is made from PVC. While PVC is being produced, harmful chemicals are released which can cause cancer in humans.

3. False. It is made from a biodegradable plastic.

4. True.

5. False. Only a few banks and credit card companies offer PVC-free cards.

Exercise 5

A

1. e

2. f

3. d

4. b

5. a

6. c

B

1. Although overpopulation is a world problem, overall birth rates are beginning to slow as women choose to have fewer children, and at an older age.

2. In some major cities, the problem of overbuilding is a result of too many skyscrapers and too little land area inside the city limits.

3. There is an overuse of fossil fuels when we should be looking for other natural sources of energy like wind and solar power.

4. City officials are trying to stop development in areas with overburdened roads and schools.

5. The best way to prevent the overflowing of our landfills is to have better and more efficient recycling programs.

6. Another way to help reduce the overcrowding of our schools is to build more schools and hire more teachers.

Exercise 6

Possible Answers

1.     A: Did you know that a big housing developer wants to build apartments in Forest Hill Park? I think it’s terrible.

B: One thing to do is to complain to the Parks Department about it.

        A: That’s a good idea.

        B: Another thing to do is to organize a public meeting to protest the threat to public property.

       

2.     A: Personally, I’m worried about drug trafficking. It puts lots of children and young people at risk.

B: One way to help is to educate young people about its dangers.

3.     A: You know, there’s a lot of corruption in our city government.

        B: The best thing to do is to report it to the local newspaper.

        A: Yeah, the bad publicity might help to clean things up a bit.

4.    A: There are so many unemployed people in this city. I just don’t know what can be done about it.

        B: One thing to do is to create more government-funded jobs.

5.     A: What worries me most is the number of homeless people on the streets.

        B: One way to help is to create more public housing projects.

        A: I agree.

        B: Another thing to do is to donate money to charities that provide shelters and food.

Exercise 7

Possible Answers

2. These days, a lot of endangered animals are being killed by hunters and poachers. The best way to stop this practice is to have more police to arrest the poachers.

3. During the past few years, lots of trees have been destroyed by acid rain. One thing to do about it is to stop factories that pollute the air.

4. Underground water is being contaminated by agricultureal sprays. The best way to deal with the problem is to create safe agricultural sprays.

5. Too many young peole’s lives are being ruined through the use of illegal drugs. The best way to fight drug traffickers is to enforce the laws against selling drugs.

Exercise 8

Your own Answers