[单项选择]As the school year kicks off, parents are once again struggling to cajole (哄骗) and, if need be, drag their exhausted teens out of bed. That image may make you laugh, but lack of sleep is no joke. (77) Teenagers who don’t get enough rest have more learning, health, behavior and mood problems than students who get at least nine hours a night. Long-term lack of sleep is tied to heart disease, overweight, depression and a shortened life span in adults, indicating the importance of establishing good sleep habits early in life. Lack of sleep can be especially deadly for teens; car accidents are the leading cause of death among teenagers, and safety experts believe sleepy driving is a major factor.
Unfortunately, few teenagers get the sleep they need. In a survey of middle-school and high-school students, University of Colorado researchers found that 82 percent said they woke up tied and unrefreshed, and more than half had trouble concentrating during the day at least once a wee
A. Multitasking
B. Striking a balance between
C. Weekend catch-up sleep
D. Healthy diet

[单项选择]As the school year kicks off, parents are once again struggling to cajole (哄骗) and, if need be, drag their exhausted teens out of bed. That image may make you laugh, but lack of sleep is no joke. (77) Teenagers who don’t get enough rest have more learning, health, behavior and mood problems than students who get at least nine hours a night. Long-term lack of sleep is tied to heart disease, overweight, depression and a shortened life span in adults, indicating the importance of establishing good sleep habits early in life. Lack of sleep can be especially deadly for teens; car accidents are the leading cause of death among teenagers, and safety experts believe sleepy driving is a major factor.
Unfortunately, few teenagers get the sleep they need. In a survey of middle-school and high-school students, University of Colorado researchers found that 82 percent said they woke up tied and unrefreshed, and more than half had trouble concentrating during the day at least once a wee
A. heart disease
B. car accidents
C. skin problems
D. poor concentration

[填空题]The date of our______(arrive)is postponed once again for the thunderstorm has blocked the air traffic since Wednesday．

[单项选择]
Two scientists who have won praise for research into the growth of cancer cells could be candidates for the Nobel Prize in medicine when the 2008 winners are presented on Monday, kicking off six days of Nobel announcements.
Australian-born U- S. citizen Elizabeth Blackburn and American Carol Greider have already won a series of medical honors for their enzyme research and experts say they could be among the front-runners for a Nobel.
Only seven women have won the medicine prize since the first Nobel Prizes were handed out in 1901. The last female winner was U. S. researcher Linda Buck in 2004, who shared the prize with Richard Axel.
Among the pair’s possible rivals are Frenchman Pierre Chambon and Americans Ronald Evans and Elwood Jensen, who opened up the field of studying proteins called nuclear hormone receptors.
As usual, the award committee is giving no hints abou
A. Elizabeth Blackburn.
B. Carol Greider.
C. Linda Buck.
D. Pierre Chambon.

[单项选择]Menorca or Majorca It is that time of the year again. The brochures are piling up in travel agents while newspapers and magazines bulge with advice about where to go. But the traditional packaged holiday, a British innovation that provided many timid natives with their first experience of warm sand, is not what it was. Indeed, the industry is anxiously awaiting a High Court ruling to find out exactly what it now is.
Two things have changed the way Britons research and book their holidays: low-cost airlines and the internet. Instead of buying a ready made package consisting of a flight, hotel, car hire and assorted entertainment from a tour operator’s brochure, it is now easy to put together a trip using an online travel agent like Expedia or Travelocity, which last July bought Lastminute. com for ￡577m (＄1 billion), or from the proliferating websites of airlines, hotels and car-rental firms.
This has led some to sound the death knell for high street travel agents and tour ope
A. An annual holiday
B. A High Court ruling
C. A new package
D. A British innovation

[单项选择]As Sesame Street kicks off its 40th anniversary season Tuesday, with first lady Michelle Obama and Broadway star Lin-Manuel Miranda as guests, it is indisputably the most beloved children’s show in history, and one of television’s biggest and most enduring success stories.
The series holds a record 122 Emmy Awards, not including a lifetime-achievement trophy (奖杯) award, and has been adapted in more than 120 countries and territories around the globe. An estimated 100,000 Sesame products have been made available internationally, from T-shirts and costumes to high-tech toys such as Elmo Live.
Sesame’s cross-cultural, multi-generational appeal has a lot to do with the specific age group it targets. "The bulk of our audience is in the 2s and 3s, though we shoot for 2 to 4," says executive producer Carol-Lynn Parente. At that early stage, says Spinney - who is 75, and has been with the show since Day 1 (he plays Oscar as well) - "children are basically the same, and have been
A. They are completely different than they were 40 years ago.
B. Many of them are devoted fans of the performance.
C. Their basic needs haven’t changed much through years.
D. They continue to watch the show when they have grown up.