Christian Eijkman, a Dutch doctor, left the Netherlands for the island of Java. Many people on the island had a disease called beri-beri. He was going there to try and find a _ . At first, Eijkman thought some kind of germ caused beri-beri. He raised some chickens. He didn't eat them, but made experiments on them. The local people were quite surprised at that. One day he noticed that his chickens became sick when they were fed the food most Javanese ate -- refined white rice . When he fed them with unrefined rice, also known as brown rice, they recovered. Eijkman realized that he had made an important discovery -- that some things in food could prevent disease. These things were named vitamins . The Javanese were not getting enough vitamins because they had actually removed the part that contains vitamins. Later, other diseases were also found to be caused by the lack of vitamins in a person's food. Today many people know the importance of vitamins and they make sure they have enough vitamins from the food they eat. If they don't, they can also take vitamin pills. We can learn from the passage that _ . A) beri-beri was caused by chickens B) Christian Eijkman's experiment was successful C) the Javanese didn't like vitamins D) the Javanese's disease was caused by a kind of germ
B
(Question)
Traveling is one of the most important activities and people have been interested in it for many years. Modern traffics develops fast, so traveling to different places has become much easier than before. Staying healthy:while traveling can make your trip happier. But do you know how to keep healthy during a trip? The following information may be useful for you. Before leaving: * Wear comfortable shoes, a hat and sunglasses. * Take some necessary medicine with you. They can be used when you get sick or have other problems. * If you do lots of sports like walking or climbing on your trip, you should do some exercise for weeks or months before you leave. While traveling: * Be sure not to eat dirty food or bad fruit. * Have enough time to take a rest during your trip. * Tap water is not safe, so drink bottled water and always clean the cover on the bottle. If you do lots of sports while traveling, you should _ before you leave. A) do some exercise for weeks or months B) learn more about sports C) watch many sports games D) buy a car
(Answer)
A
Ques: WASHINGTON--More than one in 10 of the nation's airline pilots are cleared to carry a handgun while flying, and the number will continue to grow, according to a Transportation Security Administration projection. The Federal Air Marshal Service, a TSA agency that runs the armed-pilots program, reports that 85,000 to 90,000 pilots and crewmembers flying domestic passengers and cargo planes are eligible to carry a gun. That puts the number of armed pilots at about 9,500. The TSA projects the program to grow to 16.5% of eligible pilots by the year 2011. Aviation experts were surprised and alarmed that so many pilots are toting guns in the sky. "That's a big number compared to what I thought it would be," said aviation-security consultant Rich Roth, who said he had predicted there would be fewer than 1,000 armed pilots. The 5-year-old program trains pilots for one week and arms them with 40-caliber semiautomatic pistols. "That's a scary number," said Joseph Gutheinz, a former Transportation Department special agent and aviation attorney in Houston. "By allowing so many pilots the opportunity to fly armed, we're giving terrorists opportunity to identify somebody who has a gun and overpower him." Capt. Bob Hesselbein, head of security for the Air Line Pilots Association, said the number of armed pilots is "a tremendous deterrent " to hijackings. "The challenge of an organized terrorist team is to take control of the cabin, then the flight deck." Armed pilots have come under scrutiny since March 22 when the gun of a US Airways pilot fired in the cockpit of Flight 1536 as it approached Charlotte from Denver. No one was hurt, and the plane landed safely after the bullet pierced the fuselage. Why did the US Airways pilot fire his gun in the cockpit of Flight 1536 as it approached Charlotte from Denver? A) To kill the terrorists who tried to hijack the plane. B) To escape from the hijackings. C) To tell the hijackers that he had a gun. D) The passage doesn't give the reason.
Ans: D
Ques: It's nine o'clock on a Tuesday night.You are trying to finish your maths assignment. You have only two problems left to go.Almost done!You are looking forward to a nice snack and your favorite TV show.You read the next problem and groan.You don,t have a clue how to do it .You may check your notes from class .Or you may try reading your text-book .But the problem might as well be written in a foreign language. Does this sound familiar? Most people who have taken any kind of maths class have had this experience.What do you do when you get stuck? Perhaps you call a friend.Or you ask a family member for help.But what if it's late at night? Years ago there were very few ways to get help if you were stuck on a maths problem. Maths is different from other school subjects.You often cannot find what to do in a book.A dictionary or even an encyclopedia probably won't help you.You need someone to show you the steps.Learning most kinds of maths is something like learning to play a musical instrument.You need a coach to show you what to do. In many areas there are homework telephone lines.These hot lines have volunteers.They can help you do homework in all subjects.A maths volunteer can explain the steps in a maths problem that has you stumped* Today you can also get help on the Internet.There are several homework help programs and Web pages .In some,you leave your question on a message board.Or you write it in an e-mail note.In other maths-help programs there are live volunteer teachers.You can wait for a real maths teacher to help you do the problem. The passage suggests that people who need maths homework help should _ . A) not take any more maths classes B) try a homework help program on the Internet C) watch some television D) write an e-mail note to a friend
Ans:
B