quiz7答案

The sources of air pollution are both natural and S6. As one might expect, humans have been producing increasing amounts of pollution as time has S7, and they now account for the majority of pollutants released into the air.
Your answer Correct answer
A A
5. (Listen to the audio recording for the question.)
A. The same as the man's.
B. The environment is hopeless.
(9) Air pollution can have serious consequences for the health of human beings
(10) Cities with large numbers of automobiles or those that use great quantities of coal often suffer most severely from air pollution problems
B. The wildfires are changing the climate.
C. Her son studies environmental protection in college.
D. Her son is protecting the environment.
Your answer Correct answer
C. Because the breeding method is unsuccessful.
D. Because the breeding method must be combined with cloning.
Your answer Correct answer
C C
5. What would be the best title for the passage?
(3) particles particles
(4) trapped trapped
(5) lasts lasts
(6) human-based human-based
(7) progressed progressed
(8) Even in Ancient Rome people complained about smoke put into the atmosphere
Part III
Directions: Listen to the following recording, then choose the correct answers to the questions. You will hear the recording twice. After the first playing, there will be time for you to choose the correct answers. Use the second playing to check your answers.
Air pollution has been a problem throughout history. S8.
The effects of air pollution are diverse and numerous. S9, and severely affects the natural ecosystem.
4. Why do people debate the use of cloning in conservation?
A. Because this technology is up-to-date.
B. Because this technology does not involve a moral issue in animals.
D. Increased hunting.
Your answer Correct answer
B B
2. What is the strange nature of giant pandas mentioned in the passage?
A. Peaceful.
B. Cheerful.
Air pollution includes all pollutants found in the S2 . These dangerous substances can be either in the form of gases or S3.
Air pollution can be found both outdoors and indoors. Pollutants can be S4 inside buildings, causing indoor pollution that S5 for a long time.
B. Neither the man nor the woman thinks it should be adopted.
C. Only the man thinks it should be adopted.
D. Only the woman thinks it should be adopted.
Every day, the average person breathes in about 20,000 liters of air. Every time we breathe, we risk inhaling dangerous S1 that have found their way into the air.
D D
3. (Listen to the audio recording for the question.)
A. To protect the environment.
B. To write a paper on the environment.
C. To do a good job for his classmate.
D. It is not important.
Your answer Correct answer
C C
2. (Listen to the audio recording for the question.)
A. The wildfire in Spain is a good thing.
1. Why did the number of pandas drop sharply this century?
A. Widespread forest fires.
B. The change of bamboo forests into farmland.
C. The global warming.
Some areas now suffer more than others from air pollution. S10.
Your answer Correct answer
(1) chemicals chemicals
(2) atmosphere atmosphere
1. (Listen to the audio recording for the question.)
A. It is the biggest problem.
B. It is the second most important problem.
C. It is important but not the most urgent problem.
D. To make a mess of his classmate's work.
Your answer Correct answer
B B
4. (Listen to the audio recording for the question.)
A. Both the man and woman think it should be adopted.
Unit 7 Quiz
单元小测验
Your percentage score is 88%.
Quiz result has been recorded tions: Listen to the short dialogs, then choose the correct answers to the questions. You will hear the recording twice. After the first playing, there will be time for you to choose the correct answers. Use the second playing to check your answers.
B. The rainfall has changed a lot.
C. The panda does not like to live in zoos.
D. The panda likes to live alone.
Your answer Correct answer
D D
C. solitary.
D. Lonely.
Your answer Correct answer
C C
3. Why is the breeding program not a success?
A. The temperature has changed a lot.