(Question)
Article: Beijing ?(13, July) China sent up a new data relays atellite , Tianlian I -02, on Monday at the Xichang Satellite Launch Centre in South-western Sichuan province.The new satellite will promote the country's satellite communication network for space docking . The satellite was launched on a Long-March-SC carrier rocket at 11:41 p.m., sources at the centre told Xinhua News Agency.The satellite separated from the rocket 26 minutes after its launch and was then successfully delivered into a geostationary transfer orbit . Developed by the China Academy of Space Technology under the China Aerospace Science and Technology Corporation, the satellite is the country's second data relay satellite.The first, Tianlian I -01, was launched on April 25.2008. The two satellites will form a network to improve communications between China's spacecraft and bases on Earth, according to the centre.They will also be used to help the nation's first space docking, scheduled for the second half of this year. As planned, China will launch space module Tiangong-I (1), which was designed as a platform that will dock with an unmanned spaceship, Shenzhou, for the county's first space-docking mission this year. Two more Shenzhou spaceships will dock with Tiangong-I next year, and one will be manned by two or three astronauts, according to China Manned Space Engineering Office, which was the main user of the Tianlian I series data relay satellites. "The new satellite can cover a greater area to track and command the country's space vehicles m low-Earth orbits, such as manned spacecraft and remote sensing satellites, from a higher position m outer space.Only three satellites of this kind are needed to form a global communication network, and China has two now." Pang Zhihao, a researcher and deputy editor-in-chief of Space International, said. The satellite could also equip astronauts with real-time communications, which will benefit the county s future manned space flights, he said. Question: The best title of the passage could be _ . Yes or no, is the answer "New Satellite Helps China's Space Exploration"?
(Answer)
Yes

(Question)
Article: Our risk of cancer rises dramatically as we age. So it makes sense that the elderly should be routinely screened for new tumors -- or doesn't it? While such vigilant tracking of cancer is a good thing in general, researchers are increasingly questioning whether all of this testing is necessary for the elderly. With the percentage of people over age 65 expected to nearly double by 2050, it's important to weigh the health benefits of screening against the risks and costs of routine testing. In many cases, screening can lead to additional biopsies and surgeries to remove cancer, which can cause side effects, while the cancers themselves may be slow-growing and may not pose serious health problems in patients' remaining years. But the message that everyone must screen for cancer has become so ingrained that when health care experts recommended that women under 50 and over 74 stop screening for breast cancer, it caused a riotous reaction among doctors, patients and advocacy groups. It's hard to uproot deeply held beliefs about cancer screening with scientific data. Certainly, there are people over age 75 who have had cancers detected by routine screening, and gained several extra years of life because of treatment. And clearly, people over age 75 who have other risk factors for cancer, such as a family history or prior personal experience with the disease, should continue to get screened regularly. But for the remainder, the risk of cancer, while increased at the end of life, must be balanced with other factors like remaining life expectancy . A recent study suggests that doctors start to make more objective decisions about who will truly benefit from screening- especially considering the explosion of the elderly that will soon swell our population. It's not an easy calculation to make, but one that make sense for the whole patient. Dr. Otis Brawley said, "Many doctors are ordering these tests purely to cover themselves. We need to think about the rational use of health care and stop talking about the rationing of... Question: Why do doctors recommend routine cancer screening for elderly people? Yes or no, is the answer "The elderly are in greater danger of tumor growth."?
(Answer)
No

(Question)
Article: Hi, I'm your tooth. I've been asked to represent the rest of your teeth. We need your help. We like to be clean when you show us off with your big, wide smiles. First, let me tell you a little about us. You weren't born with the baby teeth, they developed when you were about six or seven months old. You went from milk to real food in no time thanks to your twenty primary teeth. Eventually, they loosened and fell out, one at a time, probably about the time you were six or seven years old. Then we came into your life. We are your permanent teeth, all twenty-eight of us. Some people may even have thirty-two depending on those wisdom teeth in the back. Sometimes they are able to help, and sometimes they cause trouble. Many times wisdom teeth are sideways and have to be pulled. Some people don't even have them at all! On a more personal note, I am an incisor, and you have seven more just like me, here in the front of your mouth. We do the biting on those chocolate chip cookies you like so much. Next to us are the canines, four sharp teeth, two on either side. Their job is to tear food; pizza is a good one for them. Behind them are eight premolars and eight to twelve molars, depending on those wisdom teeth. The molars do the majority of the work chewing the food that you eat. They do a great job on those carrots you like so much! Did you know we not only help you bite and chew but also help you talk? That's right. Try to say "tooth" without letting your tongue touch the back of your teeth. It sounds pretty funny, doesn't it? Question: How many teeth does a four-year-old boy usually have according to the passage? Yes or no, is the answer "20."?
(Answer)
Yes