Read the following article and answer the question. Article: Two new studies suggest that modern running shoes could increase the risk of injuries to runners. One study involved sixty-eight healthy young women and men who ran at least twenty-four kilometers a week. The runners were observed on a treadmill machine . Sometimes they wore running shoes. Other times they ran barefoot . Researchers from the JKM Technologies company in Virginia, the University of Virginia and the University of Colorado did the study. They found that running shoes create more stress that could damage knees, hips and ankle joints than running barefoot. They observed that the effect was even greater than the effect reported earlier for walking in high heels. The study appeared in the official scientific journal of The American Academy of Physical Medicine. The other study appeared in the journal Nature. It compared runners in the United States and Kenya. The researchers were from Harvard University in Massachusetts, Moi University in Kenya and the University of Glasgow in Scotland. They divided the runners into three groups. One group had always run shoeless. Another group had always run with shoes. And the third group had changed to shoeless running. Runners who wear shoes usually come down heel first. That puts great force on the back of the foot. But the study found that barefoot runners generally land on the front or middle of their foot. That way they ease into their landing and avoid striking their heel. Harvard's Daniel Lieberman led the study. He says the way most running shoes are designed may explain why those who wear them land on their heels. The heel of the shoe is bigger and heavier than other parts of the shoe, so it would seem more likely to come down first. Also, the heel generally has thick material under it to soften landings. But the researchers do not suggest that runners immediately start running barefoot. They say it takes some training. And there can be risks, like running when your feet are too cold to feel if you get injured. The study was partly supported by Vibram,... Question: What's the main idea of the passage? Answer:
OPTIONS:
- Walking in high heels could cause less serious effects than running barefoot.
- Two new discoveries encourage people to run in high heels.
- Running in shoes is partly good to runners.
- Two new studies prove running without shoes is beneficial to runners in most cases.
Two new studies prove running without shoes is beneficial to runners in most cases.

Read the following article and answer the question. Article: In 1977, a dead author of detective stories saved the life of a 19-month-old baby in a most unusual way. The author was Agatha Christie, one of the most successful writers of detective stories in the world. In June 1977, a baby girl became seriously ill in Qatar, near Saudi Arabia. Doctors were unable to find out the cause of her illness with confidence, so she was sent to Hammersmith Hospital in London. She was then only semi-conscious and on the "Dangerously Ill" list. A team of doctors hurried to examine the baby only to discover that they, too, were confused by the very unusual symptoms . While they were discussing the baby's case, a nurse asked to speak to them. "Excuse me," said Nurse Marsha Maitlan, "but I think the baby is suffering from thallium poisoning." "What makes you think that?" Dr. Brown asked. "Thallium poisoning is extremely rare." "A few days ago, I was reading a novel called A Pale Horse by Agatha Christie," Nurse Maitlan explained. "In the book, somebody uses thallium poison, and all the symptoms are described. They're exactly the same as the baby's." "You're very thoughtful and you may be right," another doctor said. "We'll carry out some tests and find out whether it's thallium or not." Tests showed that the baby had indeed been poisoned by thallium, a rare metallic substance used in making special glass. Once they knew the cause of the illness, the doctors were able to give the baby the correct treatment. She soon recovered and was sent back to Qatar. Later it was reported that the poison might have come from an insecticide used in Qatar. Question: As far as we can tell from the passage, Agatha Christie _ . Answer:
OPTIONS:
- had spent a long time studying the baby's case
- visited the baby in the hospital at Hammersmith
- had never met this baby
- gave Nurse Maitlan some advice on the phone

Answer: had never met this baby

Read the following article and answer the question. Article: Prices for the Lunar New Year's eve dinners in 2007, the most important dinner for the Chinese people, will be 5 to 9 percent higher as restaurant reservations boom for the festival, Shanghai Morning Post reported on Thursday. This year, the Lunar New Year's eve festival falls on February 17. The tradition meal, know as nianyefan, is for family reunions in prefix = st1 /Chinaand to enjoy a homecoming feast, similar to Christmas dinners in the west. "Agricultural products are more expensive than previous years, and this directly leads to the prices increase of nianyefan," Xia Xiangqing, a senior official with the Shanghai Restaurants Association, told the newspaper, "Labour and transport also cost more." Up till a few years ago, almost every family in the city ate at home or the home of a close , with restaurants shutting down for the evening. However, most families in the city now prefer to head out to a restaurant on that night to save the trouble of cooking and cleaning at home. In fact, "if you haven't reserved a table yet, you may be out of luck as most of the city's restaurants are already booked before the new year," Xia said. "In the past, restaurants decided everything," Xia said. "They sometimes refused to return the customers deposit if they wanted to cancel their reservation." Xia also told the newspaper yesterday that the association is working on some standards for nianyefan to avoid complaints from customers. Question: According to the passage, if you want to book a table in a restaurant for 2007 Lunar New Year's eve, you will have to _ first. Answer:
OPTIONS:
- save some money in a bank
- accept the restaurant's decision
- put some money in the restaurant
- invite some s or friends
put some money in the restaurant