user: Read the following article and select the best answer. Article: Have you ever had the strange feeling that you were being watched? You turned around and, sure enough, someone was looking right at you! Parapsychologists   say that humans have a natural ability to sense when someone is looking at them. To research whether such a "sixth sense" really exists, Robert Baker, a psychologist at the University of Kentucky, performed two experiments. In the first one, Baker sat behind unknowing people in public places and stared at the backs of their heads for 5 to 15 minutes. The subjects were eating, drinking, reading, studying, watching TV, or working at a computer. Baker made sure that the people could not tell that he was sitting behind them during those periods. Later, when he questioned the subjects, almost all of them said they had no sense that someone was staring at them. For the second experiment, Baker told the subjects that they would be stared at from time to time from behind a two way mirror in a laboratory setting. The people had to write down when they felt they were being stared at and when they weren't. Baker found that the subjects were no better at telling when they were stared at and when they weren't. and they were no better at telling when they were stared at than if they had just guessed. Baker concludes that people do not have the ability to sense when they're being stared at. If people doubt the outcome of his two experiments, said baker, "I suggest they repeat the experiments and see for themselves." Question: The purpose of the two experiments is to  _  . - explain when people can have a sixth sense - show how people act while being watched in the lab - study whether humans can sense when they are stared at - prove why humans have a sixth sense
study whether humans can sense when they are stared at

Read the following article and select the best answer. Article: In the Caucasus region of Russia, nearly 50 out of every 100,000 people live to celebrate their 100th birthday, and many don't stop at 100! By comparison, in America only 3 people in 100,000 reach 100. But these Russian old people aren't alone. The Pakistanis, who live high in the Himalaya Mountains, and the Ecuadorans of the Andes Mountains seem to share the secret of long life, too. These people remain healthy in body and spirit despite the passage of time. While many older persons in industrial societies become weak and ill in their 60s and 70s, some Caucasians aged 100 to 140, work in the fields beside their great-great-grandchildren. Even the idea of aging is foreign to them. When asked "at what age does youth end?"most of these old people had no answer. Several replied, "Well, perhaps at age 80." What accounts for this ability to survive to such old age, and to survive so well?First of all, hard physical work is a way of life for all of these long-lived people. They begin their long days of physical labor as children and never seem to stop. For example, Mr . Rustam Mamedov is 142 years of age. His wife is 116 years old. They have been married for 90 years. Mr. Mamedov has no intention of retiring from his life as a farmer. "Why?What else would I do?"he asks. All these people get healthful rewards from the environment in which they work. They all come from mountainous regions. They live and work at elevations of 1,660 to 1,000 meters above sea level. The air has less oxygen and is pollution-free. This reduced-oxygen environment makes the heart and blood vessel  system stronger. Another factor that may contribute to the good health of these people is their isolation. To a great extent, they are separated from the pressures and worries of industrial society. Inherited factors also play some role. Most of the longest-lived people had parents and grandparents who also reached very old ages. Good family genes may, therefore, be one factor in living longer. Question: The example of Mr. and Mrs. Mamedov implies that some Caucasians aged 100 to 140   _  . - become weak and hopeless - are too old to work in the fields - benefit from physical work - are still working in the fields
benefit from physical work

Read the following article and select the best answer. Article: He had travelled thousands of miles in the hope of earning some money, but 18-year old Lin Kongming never knew danger was waiting for him.  He and six other migrant workers from Fujian Province spent 36 hours in Iraq as international hostages . But luckily, they were set free last Tuesday morning, unharmed by the people who had taken them hostages. After hard work by Chinese diplomats  in the region, the Iraqi kidnappers  agreed to hand them over to a local religious group. "The friendly relations between the Chinese and Iraqi people have played a key role in the release  of the hostages," said Foreign Ministry spokesman Kong Quan. China refused to join the US-led coalition  in the Iraqi war. Since April 4, over 60 hostages from 12 countries, including America, Italy and Japan, have been taken in Iraq. Some have been released, others were killed. The Iraqi resistance groups have started taking foreigners hostages in an attempt to force the US-led troops out of their country. As a result, many foreigners have left, fearing the situation will get worse. Some nations are also considering removing their troops from Iraq. Thailand has ordered its forces not to leave their camp and may bring them home before September as originally planned. New Zealand Prime Minister Helen Clark is considering similar action. But Dan Senor, spokesman for the US-led coalition in Baghdad, said that it would not negotiate  with "terrorists  or kidnappers" to get hostages released. Question: The author talks about Dan Senor to show the US   _  . - wouldn't give in to Iraqi terrorists or kidnappers - had enough power to station in Iraq - wouldn't give up unless it could get something - had no plan to bring its troops home
wouldn't give in to Iraqi terrorists or kidnappers

Read the following article and select the best answer. Article: Dear Mrs.Denner, Over the past five months, your husband has been causing quite a commotion  in our store. Our complaints  against Mr.Denner are listed below: July 2:Set all the alarm clocks in house-wares to go off at 5-minute intervals . July 7: Made a trail  of tomato juice on the floor leading to the women's restroom. August 4: Took a bag of _ from the candy shelf and handed out to the passing children to eat. September 14:Moved a "CAUTION--WET FLOOR" sign to a carpeted area. September 15: Set up a tent in the camping department and told other shoppers he'd invite them in if they would bring pillows and blankets from the bedding department. September 23:When a clerk asked if they could help him ,he began crying and screamed,"Why can't you people just leave me alone?" October 4: Looked right into the security camera and used it as a mirror while he picked his nose. November 10: While handling guns in the hunting department, he asked the clerk where the antidepressants were. December 3:Darted around the store while loudly humming the "Mission Impossible" theme. December 6:In the auto department, he practiced his "Madonna look" by using different sizes of funnels. December 18:Hid in a clothing rack  and when people looked through, yelled "PICK ME!PICK ME!" December 21:When an announcement came over the loud speaker, he assumed a fatal position and screamed "OH NO!IT'S THOSE VOICES AGAIN!" December 23:Went into a fitting room , shut the door, waited a while, and then yelled very loudly,"Hey! There's no toilet paper in here!" Our video surveillance cameras recorded all these. Never once did our reminding and warning work and therefore we are forced to ban him from the store. Regards, Wal-Mart Question: In which month did Mr.Denner cause most troubles? - In July. - In September. - In November. - In December.


assistant: In December.