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Unit 1
A larger and larger part of society is expressing its concern about environmental protection. Active in their concern, teachers and students hold specific meetings to discuss environmental protection. Also, city planners take environmental problems into serious consideration. And, though reducing pollution can be expensive, factories often take every possible measure to do their part. Many people are concerned and active because air and water pollution affects everyone and makes it difficult for cities to survive and businesses to make a profit.
Unit 2
Computers, just like any new technology, have a negative side. As more and more computers are used in production lines, many jobs are being taken over by computer-controlled machines. As a result, many workers are finding themselves jobless. This constitutes a threat to social security.
Another problem is computer crimes. For example, some people are finding ways to break into the bank computer systems and transfer large sums of money to their own accounts. There have been many reports like this. One more negative effect of computers is that they bring about health problems. Sitting in front of computers all day undoubtedly affects people’s health. Back pain, wrist pain, failing eyesight, to name only a few.
Unit 3
Many people place so much emphasis on success that they think any failure is bad. Failure is never pleasant because it hurts people. But in fact it can make positive contribution to our life once we learn how to make the best of it. We can learn from a disastrous party how to give a good one. And we can learn from an ill-chosen first house what to look for in a second. Even a total failure can give us fresh ideas or a change of direction. Repeated failures lead to success
and prove to be beneficial to us as we experiment every day to find out the right way of doing things.
Unit 4
Parents have to save a large amount of money for their children to study abroad. Apart from the international flight, they have to pay for their daily expense, such as food, shelter, entertainment, long-distance telephone calls, and clothing. In addition, the children should have some money ready to cover unexpected expenses.
Unit 5
There are many problems for mixed marriages. The number one reason is the cultural differences between the mixed couple, like those in customs and lifestyle. Many people have prejudice against mixed marriages. They often feel shocked to see people of different races get married and have doubts about such marriages. What’s more, children from mixed marriages tend to be
