三明学院大学英语4听力填空(2)

A R _ Listening Practice

1

Unit 2 Smart Cars

Listening Practice

Listen to a passage about computer recycling and fill in the blanks where needed.

Millions of personal computers are sold every day in replacingthe United States. They are millions of other _________older computers. Experts say that within two years, more than fifty-million computers will no longer be used in the United States alone. Local, state and federal officials are trying to find ways to deal with these old computers. They say some of the parts contain lead and other dangerous __________

substances

that could be harmful to people and the environment. A R _ Listening Practice2

Unit 2 Smart Cars

The National Safety Council says twenty-four-million computers in the United States were retired last year. Yet, it says only about three-million of those were reused orrecycled_______.The remaining twenty-one-million computers were kept in storage, shipped to foreign markets or thrown away in public landfills.

But experts say computers should not be thrown away landfills

. They say harmful chemicals fromin public _______computers can mix with other liquids in landfills. In some cases, these liquids go into the soil and threaten ground water.