For most formal occasions, it’s best to invite guests three or four weeks in advance（）

A．weeks

B．months

C．days

four days in a week; he has none on Tuesday. But he ______

The Four-Day Workweek Is Winning Fans

In an era when most of us seem to be working more hours than ever (provided we're still lucky enough to have jobs), 17, 000 people in Utah have embarked on an unusual experiment. A year ago, the Beehive State became the first in the U. S. to mandate a four-day workweek for most state employees, closing offices on Fridays in an effort to reduce energy costs. The move is different from a furlough in that salaries were not cut; nor was the total amount of time employees work. (9) But on that fifth (glorious) day, they don't have to commute, and their offices don't need to be heated, cooled or lit.

After 12 months, Utah's experiment has been deemed so successful that a new acronym could catch on: TGIT (thank God it's Thursday). (10) Altogether, the initiative will cut the state's greenhouse-gas emissions by more than 12, 000 metric tons a year. (11) "It's beneficial for the environment and beneficial for workers," says Lori Wadsworth, a professor at Brigham Young University who helped survey state employees. "People loved it." Those who didn't tended to have young children and difficulty finding extended day care.

(12) Private industry is interested as well—General Motors has just instituted a workweek of four 10-hour days at several of its plants. "There is a sense that this is ready to take off," says R. Michael Fischl, an associate dean at the University of Connecticut's law school, which is organizing a symposium on four-day weeks.

The advantages of a so-called 4-10 schedule are clear: less commuting, lower utility bills. (13) By staying open for more hours most days of the week, Utah's government offices have become accessible to people who in the past had to miss work to get there in time. (14) Plus, fears that working 10-hour days would lead to burnout turned out to be unfounded—Wadsworth says workers took fewer sick days and reported exercising more on Fridays. "This can really make a difference for work-life balance," says Jeff Herring, Utah's executive director for human resources.

Of course, in the age of the BlackBerry, fewer days in the office may not make much of a difference in terms of workload. But as energy prices start rising again, it makes sense to be flexible and find savings where we can.

A．The disadvantage of 4-10 schedule is clear.

B．And perhaps not surprisingly, 82 % of state workers say they want to keep the new.

C．The state found that its compressed workweek resulted in a 13% reduction in energy use and estimated that employees saved as much as $ 6 million in gasoline costs.

D．And there have been unexpected benefits as well, even for people who aren't state employees.

E．They pack in 40 hours by starting earlier and staying later four days a week.

F．Managers from around the world have gotten in touch with Utah officials, and cities and towns including El Paso, Texas, and Melbourne Beach, Fla., are following the state's lead.

G．With the new 4-10 policy, lines at the department of motor vehicles actually got shorter.

H．A year ago, the Beehive State became the first in the U. S. to mandate a four-day workweek for most state employees, closing offices on Fridays in an effort to reduce energy costs.

(9)

Every other week, new studies appear that either criticize or praise the roasted bean. Are there grounds for concern under the fragrant foam?

Some people believe that coffee bean can lower the incidence of some diseases. First, the disease is diabetes. A study of 14, 000 people in Finland which is the world's greatest per-capita consumer of coffee found that women who drank three to four cups a day cut their risk of developing diabetes by 29 percent. For men, it was 27 percent. Researchers aren't sure why, but suspect that the antioxidants in coffee help deliver insulin to the body's tissues. Second, it can lower cancer. In Japan, a study of 90, 000 people revealed those who drank coffee every day for ten years were half as likely to get liver cancer. Meanwhile, German scientists have identified an active compound in coffee that boosts enzymes thought to prevent colon cancer. Finally, it can also lower Parkinson's disease. Researchers in Hawaii monitored the health of more than 8, 000 Japanese-American men for 30 years and discovered that those who drank a cup of coffee a day had less than half the incidence of Parkinson's disease. A possible clue as to why: caffeine promotes the release of dopamine, a substance involved with movement and usually consumed in Parkinson's sufferers.

On the contrary, there's hot debate on whether drinking coffee is a cardiac risk. A Greek study of more than 3, 000 people found coffee drinkers has higher levels of bad substances in their blood than non-drinkers. But Harvard researchers looking at the health of coffee drinkers over 20 years could not localize any extra coronary problems. Nevertheless, a study of 2, 028 Costa Ricans found those with a gene variant that processes caffeine four times slower than average, and who also drank two to three cups of coffee a day, upped their heart-attack risk by 36 percent. As this group metabolises caffeine slower, it remains in the body for longer — possibly pushing up blood pressure.

For most of us, the humble cup of coffee is simply a harmless and enjoyable way to kick — start the day or give us an excuse for some time out. No more, no less. However, it is important to remember that different people exhibit different tolerance levels to caffeine — it is, after all, a drug.

What is mainly discussed in the text?

A．roast bean can cure disease.

B．roast bean is a good medicine.

C．more and more people want to drink coffee.

D．whether the roast bean is good or bad is also a question.

Every other week, new studies appear that either criticize or praise the roasted bean. Are there grounds for concern under the fragrant foam?

Some people believe that coffee bean can lower the incidence of some diseases. First, the disease is diabetes. A study of 14,000 people in Finland which is the world's greatest per-capita consumer of coffee found that women who drank three to four cups a day cut their risk of developing diabetes by 29 percent. For men, it was 27 percent. Researchers aren't sure why, but suspect that the antioxidants in coffee help deliver insulin to the body's tissues. Second, it can lower cancer. In Japan, a study of 90,000 people revealed those who drank coffee every day for ten years were half as likely to get liver cancer. Meanwhile, German scientists have identified an active compound in coffee that boosts enzymes thought to prevent colon cancer. Finally, it can also lower Parkinson's disease. Researchers in Hawaii monitored the health of more than 8,000 Japanese-American men for 30 years and discovered that those who drank a cup of coffee a day had less than half the incidence of Parkinson's disease. A possible clue as to why: caffeine promotes the release of dopamine, a substance involved with movement and usually consumed in Parkinson's sufferers.

On the contrary, there's hot debate on whether drinking coffee is a cardiac risk. A Greek study of more than 3,000 people found coffee drinkers has higher levels of bad substances in their blood than non-drinkers. But Harvard researchers looking at the health of coffee drinkers over 20 years could not localize any extra coronary problems. Nevertheless-, a study of 2,028 Costa Ricans found those with a gene variant that processes caffeine four times slower than average, and who also drank two to three cups of coffee a day, upped their heart-attack risk by 36 percent. As this group metabolises caffeine slower, it remains in the body for longer — possibly pushing up blood pressure.

For most of us, the humble cup of coffee is simply a harmless and enjoyable way to kick — start the day or give us an excuse for some time out. No more, no less. However, it is important to remember that different people exhibit different tolerance levels to caffeine — it is, after all, a drug.

What is mainly discussed in the text?

A．roast bean can cure disease.

B．roast bean is a good medicine.

C．more and more people want to drink coffee.

D．whether the roast bean is good or bad is also a question.

Text 3

Every other week, new studies appear that either criticize or praise the roasted bean. Are there grounds for concern under the fragrant foam?

Some people believe that coffee bean can lower the incidence of some diseases. First, the disease is diabetes. A study of 14,000 people in Finland which is the world's greatest per-capita consumer of coffee found that women who drank three to four cups a day cut their risk of developing diabetes by 29 percent. For men, it was 27 percent.' Researchers aren't sure why, but suspect that the antioxidants in coffee help deliver insulin to the body's tissues. Second, it can lower cancer. In Japan, a study of 90,000 people revealed those who drank coffee every day for ten years were half as likely to get liver cancer. Meanwhile, German scientists have identified an active compound in coffee that boosts enzymes thought to prevent colon cancer. Finally, it can also lower Parkinson's disease. Researchers in Hawaii monitored the health of more than 8,000 Japanese-American men for 30 years and discovered that those who drank a cup of coffee a day had less than half the incidence of Parkinson's disease. A possible clue as to why: caffeine promotes the release of dopamine, a substance involved with movement and usually consumed in ParHnson's sufferers.

On the contrary, there's hot debate on whether drinking coffee is a cardiac risk. A Greek study of more than 3,000 people found coffee drinkers has higher levels of bad substances in their blood than non-drinkers. But Harvard researchers looking at the health of coffee drinkers over 20 years could not localize any extra coronary problems. Nevertheless, a study of 2,028 Costa Ricans found those with a gene variant that processes caffeine four times slower than average, and who also drank two to three cups of coffee a day, upped their heart-attack risk by 36 percent. As this group me-tabolises caffeine slower, it remains in the body for longer - possibly pushing up blood pressure.

For most of us, the humble cup of coffee is simply a harmless and enjoyable way to kick -start the day or give us an excuse for some time out. No more, no less. However, it is important to remember that different people exhibit different tolerance levels to caffeine - it is, after all, a drug.

51. What is mainly discussed in the text?

[A] roast bean can cure disease.

[B] roast bean is a good medicine.

[ C] more and more people want to drink coffee.

[D] whether the roast bean is good or bad is also a question.