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"zero in on" = focus on or direction your attention to a particular issue

"I think we need to zero in on the main causes of water pollution and start solving them one at a time."

"leave no stone unturned" = do everything possible to solve a problem

"Things might look bad, but leave no stone unturned in trying to find the answer to our company's economic problems."

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[ Quiz Script ]
A Greener World
I. Pre-Listening Exercises
II. Listening Exercises
III. Post-Listening Exercises

Level:Topic:Type: Speakers:Length:
very difficultenvironmentlectureman02:09

I. Pre-Listening Exercises [Top]
First, name three environmental problems that face our world today, how people can help solve these problems. What image comes to your mind when you think of "recycling"?

HELPFUL TIP: Recycling is one important way of conserving our world's natural resources. Talk with you family about what you can do to better recycle your trash.

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II. Listening Exercises [Top]
Listen to the conversation by pressing the "Play" button of the audio type you want to hear, and answer the questions. Press the "Final Score" button to check your quiz.

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1. What would be the best title for this lecture?
A. Important Keys to Recycling Paper
B. Technological Advances Improve Recycling
C. Steps to Improving Recycling

2. According to the article, paper materials that are difficult to recycle include:
A. copy paper
B. document shred
C. food wrappers

3. In some cases, recycling could be hazardous to the environment if special precautions are not taken because:
A. industrial emissions are sometimes created in the process.
B. chemical waste is sometimes produced as a result.
C. a great deal of energy is expended to create new products.

4. According to the lecture, the demand for recyclable materials in the manufacturing of new products is sometimes sluggish because
A. some governments are unwilling to support expensive recycling methods.
B. there is a lack of advanced technology to process the materials.
C. businesses do not invest enough money into research.

5. Which is NOT one of the main keys to recycling as mentioned in the lecture?
A. government regulation of waste
B. better technology
C. more demand for recycled materials

Score =
Correct answers:

2. Listen to the conversation again as you read the Quiz Script.

III. Post-Listening Exercises [Top]

What are five specific things individuals can do to protect the environment? What are some reasons why people do not recycle or are careless when they dispose of garbage? Are there any unique programs in your city or country that promote recycling and protecting the environment?

Now, write your opinions on a similar topic at Randall's ESL Blog HERE.

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