题目内容：

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.