London, Dec.17 (Xinhua) “Drivers on London Underground trains have started reading out sayings from great thinkers like Mahatma Gandhi , Frindrich Engels, and Albert Einstein in a bid to cheer up passengers ,” officials said. As well as the usual announcements urging passengers to “mind the steps” and warning of delays, the sayings such as “ an ounce ( 盎司) of action is worth a ton of theory” have taken the place of commercial ad in the underground carriages .

New York, Oct.8 (Xinhua) Once as a famous actor, now the governor of California, Arnold Schwarzenegger wants to abandon textbooks in favor of digital ones. He plans to launch this program in August next year when California’s high-school pupils will have access to online math and science text. But some teachers wonder whether his idea of getting rid of textbooks might end up costing more not less, with digital textbook going for $300.

Amsterdam, Nov.30 (Xinhua) A few cups of coffee a day may not only help to put off the disease—dementia(痴呆) but also can treat it, according to Dr. Arendash, who led the research. After giving mice with memory damage water containing caffeine, he found the mice developed better memories and quick thinking. The reason is that caffeine is a safe drug for most people. It easily enters the brain and directly affects the disease process. He suggested people should drink five eight–ounce cups of ordinary coffee, two cups of strong ‘coffee shop’ coffee, 14 cups of tea, or 20 cola drinks to get the same amount of 500 milligrams of caffeine.

1.What’s the purpose of putting up sayings on the underground carriages in London?

A．to help passengers to kill time.

B．to encourage passengers to learn.

C．to lift the spirits of passengers.

D．to make money as a commercial ad.

2.What can we conclude from the second news?

A．digital textbooks will replace traditional textbooks.

B．online math is already available to high-school pupils .

C．digital textbooks are convenient to carry anywhere.

D．Not all the teachers support their governor’s idea.

3.Which of the following statements is true from the third news?

A．The more coffee you drink, the less chance there will be for dementia.

B．Caffeine can make mice become more and more intelligent and energetic.

C．Caffeine can affect the process of the disease—dementia and treat it.

D．Caffeine is a safe drug for all the people for everyday use so enjoy it.

London, Dec.17 (Xinhua) “Drivers on London Underground trains have started reading out sayings from great thinkers like Mahatma Gandhi , Frindrich Engels, and Albert Einstein in a bid to cheer up passengers ,” officials said. As well as the usual announcements urging passengers to “mind the steps” and warning of delays, the sayings such as “ an ounce ( 盎司) of action is worth a ton of theory” have taken the place of commercial ad in the underground carriages .

New York, Oct.8 (Xinhua) Once as a famous actor, now the governor of California, Arnold Schwarzenegger wants to abandon textbooks in favor of digital ones. He plans to launch this program in August next year when California’s high-school pupils will have access to online math and science text. But some teachers wonder whether his idea of getting rid of textbooks might end up costing more not less, with digital textbook going for $300.

Amsterdam, Nov.30 (Xinhua) A few cups of coffee a day may not only help to put off the disease—dementia(痴呆) but also can treat it, according to Dr. Arendash, who led the research. After giving mice with memory damage water containing caffeine, he found the mice developed better memories and quick thinking. The reason is that caffeine is a safe drug for most people. It easily enters the brain and directly affects the disease process. He suggested people should drink five eight–ounce cups of ordinary coffee, two cups of strong ‘coffee shop’ coffee, 14 cups of tea, or 20 cola drinks to get the same amount of 500 milligrams of caffeine.
【小题1】What’s the purpose of putting up sayings on the underground carriages in London?

Will there ever be another Einstein? This is the undercurrent（潜流） of conversation at Einstein memorial meetings throughout the year. A new Einstein will appear, scientists say. But it may take a long time. After all, more than 200 years separated Einstein from Isaac Newton.

Many physicists say the next Einstein hasn't been born yet, or is a baby now. That's because the search for a unified theory that would explain all the forces of nature has pushed current mathematics to its limits. New math must be created after the problem can be solved.

But researchers say there are many other factors working against another Einstein appearing anytime soon. For one thing, physics is a much different field today. In Einstein's day, there were a few thousand physicists worldwide, and the theorists who could argue with Einstein probably would fit into a streetcar with seats to spare. Education is different, too. One key aspect of Einstein's training that-is little noticed is the years of philosophy he read as a teenager --- Kant, Schopenhauer and Spinoza, among others. It taught him how to think independently about space and time and it wasn't long before he became a philosopher himself.

And Einstein was a clever musician. The interplay between music and math is well-known. Einstein would play his violin hard as a way to think through a knotty physics problem.

Today, universities have produced millions of physicists. There aren't many jobs in science for them, so they go to Wall Street and Silicon Valley to apply their analytical skills. Those who stay in science don’t work alone and they sometimes do experiment together which takes years.

It's hard to imagine a renegade(背叛者) like Einstein standing it. “Maybe there is an Einstein out there today,” said Columbia University physicist Brian Greene, “but it would be a lot harder for him to be heard.”

1.According to the second paragraph, the next Einstein will ___________.

2. The underlined words “knotty” in the fourth paragraph means ____________.

3. Which of the following will be useful for the next Einstein to be born?

4.The bold words “unified theory” in Paragraph 2 refers to ___________.

Today, as with so many days, I found myself stuck in a traffic jam, and I thought I’d share my little trick for keeping calm when it seems like you are creeping along(缓慢行进).

   The key to understand is that traffic jams don’t take as long as they seem to. It’s just that when we are in a hurry, and think we should be moving, but time appears to pass more than it does. To really show this, the next time you are stopped at a light that always seems to take forever to change, try to do something with your phone, your laptop, whatever you have available, and watch how much briefer the light seems.

   When you enter a jam on the highway, reset your trip plan and care the time. Then, when you clear the jam, and are normally on your way again, care the distance of the jam, and the time it took to get through it. For my experience today, it took me 6 minutes to go 2 miles. Now, it happens to be mathematically convenient that your average speed on the highway is about 60 mph, or a mile per minute. So to estimate what time the jam actually cost you, just take your traffic jam passing time, and subtract（减去） the distance covered, which we know is a good estimate of the time it would have taken with no traffic jam. In my case, all that added up to 6-2=4 minutes.

   Do this for every jam you are subjected to every time and watch how much less stressful they become once you understand how little time you are really losing.

1.We can infer from Paragraph 1 and 2 that ________.

   A. there was no traffic jam in the past

   B. modern people are under great pressure

     time passes much faster during traffic jams

   D. people in traffic jams are usually impatient

2.What does the writer suggest when caught in traffic jams?

   A. Playing a trick on other drivers.

   B. Figuring out how much time the jam actually cost you.

     Doing some math problems.

   D. Informing the boss about the delay.

3.The underlined phrase “subjected to” in the last paragraph probably means ________.

   A. experience          B. avoid                 admit                     D. control

4. What’s the main idea of the passage?

   A. Math is closely connected with life.

   B. Stress is always a bad thing.

     Traffic jam is not as bad as you think.

   D. There is no use complaining about traffic jams.

Let's do some sleep math. You lost two hours of sleep every night last week because of a big project due on Friday. On Saturday and Sunday, you slept in, getting four extra hours. On Monday morning, you were feeling so bright-eyed, and you only had one cup of coffee, instead of your usual two. But don't be cheated by your energy: You're still carrying around a heavy load of sleepiness, or what experts call " sleep debt "win this case something like six hours, almost a full night's sleep.
Sleep debt is the difference between the amount of sleep you should be getting and the amount you actually get. It's a deficit (赤字)that grows every time we skim some extra minutes off our nightly sleep. "People accumulate sleep debt gradually without being noticed," says psychiatrist William C. Dement, founder of the Stanford University Sleep Research Centre. Studies show that such short-term lack of sleep
leads to a foggy brain, worsened vision, and trouble remembering. Long-term effects include obesity, insulin(胰岛素) resistance, and heart disease. A survey by the National Sleep Foundation reports that we're losing one hour of sleep each night —more than two full weeks of sleep each year.
The good news is that, like all debt, with some work, sleep debt can be repaid. Adding an extra hour or two of sleep a night is the way to catch up. For the long-term lack of sleep, take it easy for a few months to get back into a natural sleep pattern. Go to bed when you are tired, and allow your body to wake you in the morning (no alarm clock allowed). You may find yourself catatonic (有紧张感的)in the beginning of the recovery cycle: Expect to have ten hours' shut-eye per night. As the days pass, however, the amount of sleeping time will gradually decrease.
So earn back that lost sleep —and follow the orders of your inner sleep needs, and you'll feel better. "When you put away sleep debt, you become superman." Says Stanford's Dement, talking about the improved mental and physical capabilities that come with being well rested.
72. The example of sleep math is used to show       .                                                                                          
A. in what case you build up a sleep debt
B. why you need six hours' sleep every night.
C. why you are full of energy even when lacking sleep.
D. you should drink coffee to keep energetic
73. The author begins Paragraph 2 with       .
A. an example     B. a definition     C. an order     D. a story
74. By saying the underlined sentence in the last paragraph, Dement means       .
A. a superman always needs a lot of sleep
B. you can become superhuman after you repay your debt
C. you will be in a good state with enough sleep
D. you will become superhuman if you don't make up for sleep debt
75. What might be the most suitable title for the passage?
A. How can you keep energetic?     B. Can you have a good sleep?
C. What is sleep debt?             D. Can you catch up on sleep debt?