Modem mass-production methods lower the cost of making goods, and thus give us better values. At the same time, American ingenuity and science are constantly at work improving the quality of products. In this way, better quality products at good values are continually being brought to the people of all income groups.
As an example of how this works ,when facial tissues were first put on the market in 1924 ,they were made in limited quantities and sold at 65 cents per box of 200. People liked these facial tissues immediately and began asking for them when they went into different stores. Because there was such a demand for the product, manufacturers began making tissues in larger and larger quantities. Because the manufacturers were making tissues in greater quantities, their production costs were lowered, so that the cost of tissues went down.In the meanwhile, the quality of facial tissues was constantly improving, because more manufacturers went into the business of making tissues and each manufacturer strove to make his product better than his competitors. Today, instead of costing 65 cents, a box of 200 facial tissues costs around one-third of that price, and they are both softer and stronger.
When people are free to compete--when they are free to make more things and make them better--everyone benefits.

A:was not stopped B:became more competitive C:remained unchanged D:was increased to keep up with the demand

When the demand for facial tissues increased, the supply ______.

A:was not stopped B:became more competitive C:remained unchanged D:was increased to keep up with the demand

Memory Class Stan Field knows what age can do to a person’’s memory, and he’’s not taking any chances with his. He chooses his food carefully and gets plenty of exercise. He also avoids stress, coca cola and cigarette smoke. What’’s more, at breakfast each morning, the 69-year-old chemical engineer swallows a plateful of pills in the hope of boosting his brain power. Michelle Amove is less than half Field’’s age, but no less concerned about her memory. While working round the clock to finish a degree in film studies, the 33-year-old New Yorker had the alarming sensation that she had stopped retaining anything. "I couldn’’t even remember names," she says. "I thought, Oh, no, I’’m over 30. It’’s all downhill from here. " Besides loading up on supplements, Amove signed up for a memory enhancing course at New York’’s Mount Siani Medical Center. And when she got there, she found herself surrounded by people who were just as worried as she was. For millions of Americans, and especially for baby boomers (生育高峰出生的人) , the demands of the Information Age conflict with a sense of declining physical power. "When boomers were in their 30s and 40s, they launched the fitness boom," says Cynthia Green, the psychologist who teaches Mount Sinai’’s memory class. "Now we have the mental-fitness boom Memory is the boomers’’ new life-crisis issue." And of course a major marketing opportunity. The demand for books and seminars has never been greater, says Jack Lannom, a longtime memory trainer whose weekly TV show, " Mind Unlimited," goes out to 33 million homes on the Christian Network. Anxious consumers are rushing to buy do-it-yourself programs and supplement makers are trying to sell everything but sawdust (木屑) as a brain booster. But before you get out your checkbook, a few questions are in order. Does everyday forgetfulness signal declining brain function? Is "megamemory" (超级记忆) a realistic goal for normal people? And if you could have a perfect memory, would you really want it? Until recently, no one could address those issues with much authority, but our knowledge of memory is exploding. New techniques are revealing how different parts of the brain interact to preserve meaningful experiences. Biologists are trying to understand the underlying (潜在的) chemical processes and neuroscientists (神经系统科学家) are discovering how age, stress and other factors can disrupt them. No one is close to finding the secret to perfect recall, but as you’’ll see, that may be just as well. Which of the following does NOT indicate peoples enhanced awareness of the importance of memory?

A:More demand for coca cola and cigarettes. B:More demand for seminars on memory. C:More demand for memory-enhancing supplements. D:More demand for books on memory.

Memory Class Stan Field knows what age can do to a person’’s memory, and he’’s not taking any chances with his. He chooses his food carefully and gets plenty of exercise. He also avoids stress, coca cola and cigarette smoke. What’’s more, at breakfast each morning, the 69-year-old chemical engineer swallows a plateful of pills in the hope of boosting his brain power. Michelle Amove is less than half Field’’s age, but no less concerned about her memory. While working round the clock to finish a degree in film studies, the 33-year-old New Yorker had the alarming sensation that she had stopped retaining anything. "I couldn’’t even remember names," she says. "I thought, Oh, no, I’’m over 30. It’’s all downhill from here. " Besides loading up on supplements, Amove signed up for a memory enhancing course at New York’’s Mount Siani Medical Center. And when she got there, she found herself surrounded by people who were just as worried as she was. For millions of Americans, and especially for baby boomers (生育高峰出生的人) , the demands of the Information Age conflict with a sense of declining physical power. "When boomers were in their 30s and 40s, they launched the fitness boom," says Cynthia Green, the psychologist who teaches Mount Sinai’’s memory class. "Now we have the mental-fitness boom Memory is the boomers’’ new life-crisis issue." And of course a major marketing opportunity. The demand for books and seminars has never been greater, says Jack Lannom, a longtime memory trainer whose weekly TV show, " Mind Unlimited," goes out to 33 million homes on the Christian Network. Anxious consumers are rushing to buy do-it-yourself programs and supplement makers are trying to sell everything but sawdust (木屑) as a brain booster. But before you get out your checkbook, a few questions are in order. Does everyday forgetfulness signal declining brain function? Is "megamemory" (超级记忆) a realistic goal for normal people? And if you could have a perfect memory, would you really want it? Until recently, no one could address those issues with much authority, but our knowledge of memory is exploding. New techniques are revealing how different parts of the brain interact to preserve meaningful experiences. Biologists are trying to understand the underlying (潜在的) chemical processes and neuroscientists (神经系统科学家) are discovering how age, stress and other factors can disrupt them. No one is close to finding the secret to perfect recall, but as you’’ll see, that may be just as well. Which of the following does NOT indicate peoples enhanced awareness of the importance of memory?

A:More demand for coca cola and cigarettes. B:More demand for seminars on memory. C:More demand for memory-enhancing supplements. D:More demand for books on memory.

Memory Class Stan Field knows what age can do to a person’’s memory, and he’’s not taking any chances with his. He chooses his food carefully and gets plenty of exercise. He also avoids stress, coca cola and cigarette smoke. What’’s more, at breakfast each morning, the 69-year-old chemical engineer swallows a plateful of pills in the hope of boosting his brain power. Michelle Amove is less than half Field’’s age, but no less concerned about her memory. While working round the clock to finish a degree in film studies, the 33-year-old New Yorker had the alarming sensation that she had stopped retaining anything. "I couldn’’t even remember names," she says. "I thought, Oh, no, I’’m over 30. It’’s all downhill from here. " Besides loading up on supplements, Amove signed up for a memory enhancing course at New York’’s Mount Siani Medical Center. And when she got there, she found herself surrounded by people who were just as worried as she was. For millions of Americans, and especially for baby boomers (生育高峰出生的人) , the demands of the Information Age conflict with a sense of declining physical power. "When boomers were in their 30s and 40s, they launched the fitness boom," says Cynthia Green, the psychologist who teaches Mount Sinai’’s memory class. "Now we have the mental-fitness boom Memory is the boomers’’ new life-crisis issue." And of course a major marketing opportunity. The demand for books and seminars has never been greater, says Jack Lannom, a longtime memory trainer whose weekly TV show, " Mind Unlimited," goes out to 33 million homes on the Christian Network. Anxious consumers are rushing to buy do-it-yourself programs and supplement makers are trying to sell everything but sawdust (木屑) as a brain booster. But before you get out your checkbook, a few questions are in order. Does everyday forgetfulness signal declining brain function? Is "megamemory" (超级记忆) a realistic goal for normal people? And if you could have a perfect memory, would you really want it? Until recently, no one could address those issues with much authority, but our knowledge of memory is exploding. New techniques are revealing how different parts of the brain interact to preserve meaningful experiences. Biologists are trying to understand the underlying (潜在的) chemical processes and neuroscientists (神经系统科学家) are discovering how age, stress and other factors can disrupt them. No one is close to finding the secret to perfect recall, but as you’’ll see, that may be just as well. Which of the following does NOT indicate peoples enhanced awareness of the importance of memory?

A:More demand for coca cola and cigarettes. B:More demand for seminars on memory. C:More demand for memory-enhancing supplements. D:More demand for books on memory.

Memory Class Stan Field knows what age can do to a person’’s memory, and he’’s not taking any chances with his. He chooses his food carefully and gets plenty of exercise. He also avoids stress, coca cola and cigarette smoke. What’’s more, at breakfast each morning, the 69-year-old chemical engineer swallows a plateful of pills in the hope of boosting his brain power. Michelle Amove is less than half Field’’s age, but no less concerned about her memory. While working round the clock to finish a degree in film studies, the 33-year-old New Yorker had the alarming sensation that she had stopped retaining anything. "I couldn’’t even remember names," she says. "I thought, Oh, no, I’’m over 30. It’’s all downhill from here. " Besides loading up on supplements, Amove signed up for a memory enhancing course at New York’’s Mount Siani Medical Center. And when she got there, she found herself surrounded by people who were just as worried as she was. For millions of Americans, and especially for baby boomers (生育高峰出生的人) , the demands of the Information Age conflict with a sense of declining physical power. "When boomers were in their 30s and 40s, they launched the fitness boom," says Cynthia Green, the psychologist who teaches Mount Sinai’’s memory class. "Now we have the mental-fitness boom Memory is the boomers’’ new life-crisis issue." And of course a major marketing opportunity. The demand for books and seminars has never been greater, says Jack Lannom, a longtime memory trainer whose weekly TV show, " Mind Unlimited," goes out to 33 million homes on the Christian Network. Anxious consumers are rushing to buy do-it-yourself programs and supplement makers are trying to sell everything but sawdust (木屑) as a brain booster. But before you get out your checkbook, a few questions are in order. Does everyday forgetfulness signal declining brain function? Is "megamemory" (超级记忆) a realistic goal for normal people? And if you could have a perfect memory, would you really want it? Until recently, no one could address those issues with much authority, but our knowledge of memory is exploding. New techniques are revealing how different parts of the brain interact to preserve meaningful experiences. Biologists are trying to understand the underlying (潜在的) chemical processes and neuroscientists (神经系统科学家) are discovering how age, stress and other factors can disrupt them. No one is close to finding the secret to perfect recall, but as you’’ll see, that may be just as well. Which of the following does NOT indicate peoples enhanced awareness of the importance of memory?

A:More demand for coca cola and cigarettes. B:More demand for seminars on memory. C:More demand for memory-enhancing supplements. D:More demand for books on memory.