Five years ago, David Smith wore an expensive suit to work every day． "I was a clothes addict," he jokes． "I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled．" Today David wears casual clothes--khaki pants and a sports shirt to the office． He hardly ever wears a necktie． "I'm working harder than ever," David says, "and I need to feel comfortable．" More and more companies are allowing their office workers to wear casual clothes to work． In the United States, the changes from formal to casual office wear have been slow． In the early 1990s, many companies allowed their workers to wear casual clothes on Friday (but only on Friday)． This became known as "dress-down Friday" or "casual Friday"． "What started out as an extra one-day-a-week benefit for workers has really become an everyday thing．" said business adviser Maisly Jones． Why have so many companies started allowing their workers to wear casual clothes' One reason is that it's easier for a company to attract new workers if it has a casual dress code． "A lot of young people don't want to dress up for work," says the owner of a software company, "so it's hard to hire people if you have a conservative dress code．" Another reason is that people seem happier and more productive when they are wearing comfortable clothes． In a study made by Levi Strauss and Company, 85 percent of employers said that casual dress has a side effect on work． Supporters of casual office wear also say that a casual dress code helps them save money． "Suits are expensive, if you have to wear one every day," one person said． "For the same amount of money, you can buy a lot more casual clothes．" David Smith refers to himself as be-ring been "a clothes addict" because_____．
A. he often wore khaki pants and a sports shirtB. he couldn't stand a clean appearanceC. he wanted his clothes to look tidy and clean all the timeD. he didn't want to spend much money on clothes

African elephants have been slaughtered at alarming rate over the past decade, largely because they are the primary source of the world's ivory． Their population has been dwindled from 1．3 million in 1979 to just 625,000 today, and the rate of killing has been accelerating in recent years because many of the older, bigger tusked animals have already been destroyed． "The poachers now must kill times as many elephants to get the same quantity of ivory," explained Curtis Bohlen, Senior vice president of the World Wildlife Fund． Though its record on the environment has been spotty so far, the government last week took the lead in a major conservation issue by imposing a ban on ivory imports into the US． The move came just four days after a consortium of conservation groups, including the World Wildlife Fund and Wildlife Conservation International, called for that kind of action, and it made the US the first nation to forbid imports of both raw and finished ivory． The ban, says Bohlen, sends a very clear message to the ivory poachers that the game is over． In the past African nations have resisted an ivory ban, but increasingly they realized that the decimation of the elephant herds poses a serious threat to their tourist business． Last month Tanzania and several other African countries called for an amendment to the 102 nation Convention on International Trade in Endangered Species that would make the ivory trade illegal worldwide． The amendment is expected to be approved at an October meeting in Geneva and to go into effect next January． But between now and then, conservationists contend, poachers may go on a rampage, killing elephants wholesale, so nations should unilaterally forbid imports right away． The US government brought that argument, and by week's end the twelve nation European Community had followed with its own ban． Since many of the older, bigger-tusked animals have already been destroyed, what did the poacher do?
A. They gave up poaching．B. They killed more elephants to get the same quantity of ivory．C. To them, game is over．D. They realized it was illegal to slaughter elephants．

Five years ago, David Smith wore an expensive suit to work every day． "I was a clothes addict," he jokes． "I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled．" Today David wears casual clothes--khaki pants and a sports shirt to the office． He hardly ever wears a necktie． "I'm working harder than ever," David says, "and I need to feel comfortable．" More and more companies are allowing their office workers to wear casual clothes to work． In the United States, the changes from formal to casual office wear have been slow． In the early 1990s, many companies allowed their workers to wear casual clothes on Friday (but only on Friday)． This became known as "dress-down Friday" or "casual Friday"． "What started out as an extra one-day-a-week benefit for workers has really become an everyday thing．" said business adviser Maisly Jones． Why have so many companies started allowing their workers to wear casual clothes' One reason is that it's easier for a company to attract new workers if it has a casual dress code． "A lot of young people don't want to dress up for work," says the owner of a software company, "so it's hard to hire people if you have a conservative dress code．" Another reason is that people seem happier and more productive when they are wearing comfortable clothes． In a study made by Levi Strauss and Company, 85 percent of employers said that casual dress has a side effect on work． Supporters of casual office wear also say that a casual dress code helps them save money． "Suits are expensive, if you have to wear one every day," one person said． "For the same amount of money, you can buy a lot more casual clothes．" David Smith wears casual clothes now, because ______
A. they make him feel at ease when workingB. he cannot afford to buy expensive clothesC. he looks handsome in casual clothesD. he no longer works for any company

African elephants have been slaughtered at alarming rate over the past decade, largely because they are the primary source of the world's ivory． Their population has been dwindled from 1．3 million in 1979 to just 625,000 today, and the rate of killing has been accelerating in recent years because many of the older, bigger tusked animals have already been destroyed． "The poachers now must kill times as many elephants to get the same quantity of ivory," explained Curtis Bohlen, Senior vice president of the World Wildlife Fund． Though its record on the environment has been spotty so far, the government last week took the lead in a major conservation issue by imposing a ban on ivory imports into the US． The move came just four days after a consortium of conservation groups, including the World Wildlife Fund and Wildlife Conservation International, called for that kind of action, and it made the US the first nation to forbid imports of both raw and finished ivory． The ban, says Bohlen, sends a very clear message to the ivory poachers that the game is over． In the past African nations have resisted an ivory ban, but increasingly they realized that the decimation of the elephant herds poses a serious threat to their tourist business． Last month Tanzania and several other African countries called for an amendment to the 102 nation Convention on International Trade in Endangered Species that would make the ivory trade illegal worldwide． The amendment is expected to be approved at an October meeting in Geneva and to go into effect next January． But between now and then, conservationists contend, poachers may go on a rampage, killing elephants wholesale, so nations should unilaterally forbid imports right away． The US government brought that argument, and by week's end the twelve nation European Community had followed with its own ban． According to the passage, "dwindle" means______
A. decreaseB. enlargeC. weakenD. eliminate

Five years ago, David Smith wore an expensive suit to work every day． "I was a clothes addict," he jokes． "I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled．" Today David wears casual clothes--khaki pants and a sports shirt to the office． He hardly ever wears a necktie． "I'm working harder than ever," David says, "and I need to feel comfortable．" More and more companies are allowing their office workers to wear casual clothes to work． In the United States, the changes from formal to casual office wear have been slow． In the early 1990s, many companies allowed their workers to wear casual clothes on Friday (but only on Friday)． This became known as "dress-down Friday" or "casual Friday"． "What started out as an extra one-day-a-week benefit for workers has really become an everyday thing．" said business adviser Maisly Jones． Why have so many companies started allowing their workers to wear casual clothes' One reason is that it's easier for a company to attract new workers if it has a casual dress code． "A lot of young people don't want to dress up for work," says the owner of a software company, "so it's hard to hire people if you have a conservative dress code．" Another reason is that people seem happier and more productive when they are wearing comfortable clothes． In a study made by Levi Strauss and Company, 85 percent of employers said that casual dress has a side effect on work． Supporters of casual office wear also say that a casual dress code helps them save money． "Suits are expensive, if you have to wear one every day," one person said． "For the same amount of money, you can buy a lot more casual clothes．" According to this passage, which of the following is TRUE?
A. Company workers started to dress down about twenty years ago．B. Dress-down has become an everyday phenomenon since the early 1990s．C. "Dress-down Friday" was first given as a favor from employers．D. Many workers want to wear casual clothes to impress people．

African elephants have been slaughtered at alarming rate over the past decade, largely because they are the primary source of the world's ivory． Their population has been dwindled from 1．3 million in 1979 to just 625,000 today, and the rate of killing has been accelerating in recent years because many of the older, bigger tusked animals have already been destroyed． "The poachers now must kill times as many elephants to get the same quantity of ivory," explained Curtis Bohlen, Senior vice president of the World Wildlife Fund． Though its record on the environment has been spotty so far, the government last week took the lead in a major conservation issue by imposing a ban on ivory imports into the US． The move came just four days after a consortium of conservation groups, including the World Wildlife Fund and Wildlife Conservation International, called for that kind of action, and it made the US the first nation to forbid imports of both raw and finished ivory． The ban, says Bohlen, sends a very clear message to the ivory poachers that the game is over． In the past African nations have resisted an ivory ban, but increasingly they realized that the decimation of the elephant herds poses a serious threat to their tourist business． Last month Tanzania and several other African countries called for an amendment to the 102 nation Convention on International Trade in Endangered Species that would make the ivory trade illegal worldwide． The amendment is expected to be approved at an October meeting in Geneva and to go into effect next January． But between now and then, conservationists contend, poachers may go on a rampage, killing elephants wholesale, so nations should unilaterally forbid imports right away． The US government brought that argument, and by week's end the twelve nation European Community had followed with its own ban． Which of the following is the best title for the passage?
A. African Elephants and the Ivory TradeB. A Bid to Save the ElephantC. The PoachersD. Elephants in Danger