, have a 24-hour biological clock that tells them to prepare for the sun.The clock is set so it goes... alarm tells plants to prepare for strong sunlight, says US plant physiologist Autar K. Mattoo.The clock ……

Turning back the clock to have the adventure of their lives几个学生勇敢进入时间隧道，开始未知的中世纪之旅。他们... century castle in France.When Johnston goes to report to their sponsor, the International Technology ……

?"Scream for meONE day, a man can't bear the torturing toothache and goes to see a dentist.During... to miss the 4 o'clock baseball game." ……

"The Adventures of Tintin" every evening at 7 o'clock. There are 39 stories. Tintin has been... reporter withblond hair(金黄头发). He goes to lots of places, and sometimes he gets into trouble.But he ……

WASHINGTON -- A team of US physicists has devised what is believed to be the world's most stable clock. Their new mercury-ion clock is so regular in fact, it would err by less than a second in the 15 ……

THE clock strikes 11 in the evening and...Oops! There goes the broadband Internet access... effectiveness.According to the regulation, Internet access lasts from 12 o'clock at noon to 11 pm ……

. But the mornings are such a struggle to drag yourself from bed as the sound of the alarm clock attacks you like... after three evening classes. He usually goes to bed by 11 pm and must fight thetemptation(诱惑) to doze ……

is thepresident(总统) of the US!As the first daughter, she always hasbodyguards(保镖) around her.Sam goes... bodyguards around every corner. Other students don't let her have a quiet life. Her fun roommate Mia makes ……

articles. She is quiet, but I'm talkative. To escape from this silence, I often go out with friends... the silence goes on. Some people enjoy silence, sometimes because their parents encouraged it. If so ……

tips for a good night's sleep:*Listen to yourbody clock(生物钟), not your alarm clock.*Use your bed... and in the early afternoon. Don't exercise in the evening.*Stop looking at that clock while you can ……

years at least." Thorp said. With that aim in mind Thorpe starts training at 5 o'clock every morning.But away from the pool, Thorpe is quiet and gentle. He wears his fame lightly, using it to help ……

mail. Car and home security systems. The list goes on. It doesn't take long to accumulate a dozen... corporations that must maintain help desks for their computer-using employees — often round the clock. How ……

, a bunch of fantasies we can't control."Abbas doesn't wear a watch and covers the clock in his car. "I... or thinking about the future ridiculous, he adds. There's nothing wrong with planning. As the saying goes ……

RESEARCHERS think the human body clock could hinder space exploration.A team at the Imperial... human body clock has a period of 24 hours and 11 minutes. The human body is used to this "circadian ……

CHICAGO — The world has changed considerably since 1947 when the so-called Doomsday Clock made its... famous clock appeared on the cover. Since then, the clock has moved forward and back by its founder ……