Every few years，the coal Workers ______ their lungs X-rayed to ensure their health.

It was toward the fulfillment of these economic and social drives ______ we originally created and developed our technology.

When do people decide whether or not they want to become friends? During their first four minutes together, according to a book by Dr. Leonard Zunin. In his book, Contact: The First Four Minutes, he offers this advice to anyone interested in starting new friendships: ' 41 A lot of people's whole lives would change if they did just that.' You may have noticed that the average person does not give his undivided attention to someone he has just met. 42 If anyone has ever done this to you, you probably did not like him very much. When we are introduced to new people, the author suggests, we should try to appear friendly and self-confident. In general, he says, 'People like people who like themselves.' On the other hand, we should not make the other person think we are too sure of ourselves. It is important to appear interested and sympathetic, realizing that the other person has his own needs, fears, and hopes. Hearing such advice, one might say, 'But I'm not a friendly, self-confident person. That's not my nature. It would be dishonest for me to act that way.' 43 We can become accustomed to any changes we choose to make in our personality. 'It is like getting used to a new car. It may be unfamiliar at first, but it goes much better than the old one.' But isn't it dishonest to give the appearance of friendly self-confidence when we don't actually feel that way? Perhaps, but according to Dr. Zunin, 'total honesty' is not always good for social relationships, especially during the first few minutes of contact. There is a time for everything, and a certain amount of play-acting may be best for the first few minutes of contact with a stranger. That is not the time to complain about one's health or to mention faults one finds in other people. It is not the time to tell the whole truth about one's opinions and impressions. 44 For a husband and wife or a parent and child, problems often arise during their first four minutes together after they have been apart. Dr. Zunin suggests that these first few minutes together be treated with care. If there are unpleasant matters to be discussed, they should be dealt with later. The author says that interpersonal relations should be taught as a required course in every school, along with reading, writing, and mathematics. 45 _That is at least as important as how much we know. A. Much of what has been said about strangers also applies to relationships with family members and friends. B. In his opinion, success in life depends mainly on how we get along with other people. C. He is eager to make friends with everyone. D. Every time you meet someone in a social situation, give him your undivided attention for four minutes. E. He keeps looking over the other person's shoulder, as if hoping to find someone more interesting in another part of the room. F. In reply, Dr. Zunin would claim that a little practice can help us feel comfortable about changing our social habits. G. Paying closer attention to the other helps find the confidence within ourselves.

—Have you thought of the topic for the composition? —Not yet, I ______ it very carefully, but I haven't decided.

I admire her courage, compassion and ______ to the cause of humanity, justice and peace.

Barbara is easy to recognize as she's the only one of the women who ______ evening dress.

Our TV sets ______ well, but ten years ago no one could have imagined such a big share in the market that they were to have.

— ______. —She is very tall and white, with a shoulder—length tail.

His strange behavior greatly, ______ me and my friends as well that evening.

In 1924 Hemingway left the Toronto Star, for ______ he had worked as a foreign correspondent.

Zoos have become an important site for the preservation and protection of wildlife resources, 1 those species that are endangered. 2 , many zoos displayed live animals for public entertainment. Presently some zoos have become scientific and educational 3 that have contributed to the understanding and conservation of wild animal populations. 4 the challenges facing modern zoos are the cost of upgrading old facilities, the struggle to obtain 5 operating funds, and the need to attract more visitors 6 new and entertaining exhibits. Many 7 zoos in American cities have undergone renovation during the last decades of the twentieth century. Among the recent trends in zoo 8 is the construction of new enclosures that resemble natural habitats. The replacement of steel bars and concrete floors 9 appropriately designed surroundings improves visitor appreciation of the 10 . Such renovations may 11 stress on animals and allow them to interact with one another 12 naturally. Several major zoos conduct captive propagation programs. A captive propagation problem includes the breeding of 13 zoo or wild animals to obtain offspring, usually for release to 14 or for transfer to other zoos. Captive breeding is one method of 15 some species from extinction. Zoos have expanded and improved public education programs also, with education departments that develop programs 16 to zoo exhibits. Public activities include in-school programs, zoo tours, special events, and websites. The Zoological Society of New York, for example, conducted a 17 project with a Western African to monitor an elephant herd 18 it moved throughout its range. The importance of zoos will increase as natural habitats are diminishing. Through their efforts 19 conservation, education, and environmental advocacy, zoos 20 continue to play a critical role in wildlife preservation throughout the world.

Democracy is based on the notion ______ everyone is created equal.

The more we looked at the picture, ______.

Andrew returned to the room and ______ Mary ______ their decision.

A man who could ______ such treatment was a man of remarkable physical courage and moral strength.

Why play games? Because they are fun, and a lot more besides. Following the rules…planning your next move…acting as a team member…these are all 'game' ideas that you will come across throughout your life. Think about some of the games you played as a young child, such as rope-jumping and hide-and-seek. Such games are entertaining and fun. But perhaps more importantly, they translate life into exciting dramas that teach children some of the basic rules they will be expected to follow the rest of their lives, such as taking turns and cooperating (合作). Many children's games have a practical side. Children around the world play games that prepare them for work they will do as grown-ups. For instance, some Saudi Arabian children play a game called bones. Which sharpens the hand-eye coordination(协调)needed in hunting. Many sports encourage national or local pride. The most famous games of all, the Olympic Games, bring athletes from around the world together to take part in friendly competition. People who watch the event wave flags, knowing that a gold medal is a win for an entire country, not just the athlete who earned it. For countries experiencing natural disasters or war, an Olympic win can mean so much. Sports are also an event that unites people. Soccer is the most popular sport in the world. People on all continents play it—some for fun and some for a living. Nicolette Iribarne, a Californian soccer player, has discovered a way to spread hope through soccer. He created a foundation to provide poor children with not only soccer balls but also a promising future. Next time you play your favorite game or sport, think about why you enjoy it, what skills are needed, and whether these skills will help you in other aspects of your life.

I'll never forget the time when I had to climb ______ a window because I was locked out of the house.

Farmland ______ quickly, so they are considering ______ a programme to solve the problem.

In order to find the missing child, villagers ______ all they can over the past five hours.

—Coach, can I continue with the training? —Sorry, you can't ______ you haven't recovered from the knee injury.