These drugs are not believed to be habit-forming, and they don't seem to have the same liver-damaging side-effects that earlier sleep aids had. At the same time, there is some evidence that these new sleeping pills may not be completely harmless.
Sleep experts also recommend their patients with what is known as "cognitive behavioral therapy," or CBT. It is a form of psychotherapy that tries to change the way a patient thinks, feels, and acts about sleep.
It doesn't yield immediate results, though, and in many parts of the country, it is unavailable. There are only about 200 clinicians worldwide who have extensive CBT training in the area of sleep. That is part of the reason prescription drugs have become so popular.
But the biggest reason, says Gregg Jacobs, an assistant professor of psychiatry at Harvard Medical School, is marketing. "You'll see their ads every night on television now. They're the most frequent drug ads on TV. As a result, people around the United States - and soon around the world - are being given the message that you can take a sleeping pill, and it will cure your insomnia. And when people hear that, they rush out to buy this pill."
Questions 16-20 are based on Passage Four.
16. Which is the topic of the passage?
A. Cures for insomnia. B. Drug companies' strategies.
C. Harms caused by sleeping pills. D. Sleeping problem in the US.
17. According to the passage, Ambien and Lunesta are ______.
A. sleeping clinics B. sleep experts
C. sleeping pills D. symptoms of insomnia
18. According to the passage, people who take the new sleeping pills may ______.
A. feel sleepy during working hours B. experience some side-effects
C. develop the habit to eat them D. suffer some liver problem
19. Which is implied, but not stated, in the passage?
A. In the past, people used to sleep better.
B. 75% of Americans had sleeping problem in 2005.
C. Some new sleeping pills may not be totally harmless.
D. The modern life style is blamed for sleeping problems.
20. Sleeping pills are used more often than CBT to combat insomnia for the following reasons EXCEPT ______.
A. CBT doesn't show quick results as sleeping pills
B. drug ads influence people in their choice
C. CBT is too new an idea for patients to accept
D. CBT cannot be found in many parts of the US
Passage Five
Farmers in the Midwest put in some of the longest workdays of any profession in the United States. In addition to caring for their crops and livestock, they have to keep up with new farming techniques, such as those for combining soil erosion and increasing livestock production. It is essential that farmers adopt these advances in technology if they want to continue to meet the growing demand of a hungry world.
Agriculture is the number one industry in the United States and agricultural products are the country's leading export. American farmers manage to feed not only the total population of the United States, but also millions of other people throughout the rest of the world. Corn and soybean exports alone account for approximately 75% of the amount sold in world market.
