Article: We have known for a long time that flowers of different plants open and close at different time of day. Yet no one really understands why flowers open and close like this at particular times. It is not as simple as we might think, as new experiments have shown. In one experiment, flowers were kept in darkness. We might expect that the flowers, without any information about the time of the day, did not open as they usually do. In fact, they continued to open at their usual time. This shows that they have some mysterious way of knowing the time. Their sense of time does not depend on information from the outside world; it is, so to speak, inside them, a kind of "inner clock". This discovery may not seem to be very important. However, it was later found that not just plants but also animals including man have this "inner clock"which controls working of their bodies and their activities. Human beings, then, are also controlled by this mysterious power. Whether we wish it or not, it affects such things in our life as our need for sleep, our need for food. And our ability to concentrate . Question: We may know that if we make good use of the 'inner clock', _ . Yes or no, is the answer "we will have more strength to do our work."?
Yes

Article: Born in Texas in 1893,Bessie Coleman drew she wanted to do something exciting with her life.Then Coleman saw her first airplane, and she knew she wanted to fly.But no school would teach her because she was a woman and a black woman.So Coleman went to Europe.At the age of twenty-eight, she became the world's first black woman to hold a pilot's license .Then she went home to fly in air shows .Soon she was called "Brave Bessie."Bessie Coleman had wanted to open a flying school for black women.Sadly, she never saw her dream come true.She was killed in a plane crash.But Coleman is still remembered today.A group of black flies call themselves the "Bessie Coleman Aviators. Question: The best title is _ . Yes or no, is the answer "The First Black Woman Pilot"?
Yes

Article: Running is becoming popular these days. Many of us run for our health. Doctors say many of the health problems come from these bad habits: eating too much, drinking too much, smoking too much and not having enough exercise. Doctors tell us, "Eat less, don't smoke, and exercise more." Running is good exercise because it helps build a strong heart. It also helps most people lose _ . One 68-year-old woman runs three times a week. She runs to lose weight. "I love to eat," she says. Running is good for our health in other ways, too. Many runners say running makes colds and other small health problems go away. "Running is my doctor," says one man. Running can also help people to relax. So today men and women of all ages enjoy running. Question: What bad habits do the health problem come from? Yes or no, is the answer "All the above"?
No

Article: Television has taken the place of schools as the main educator in America. There are several reasons for this. First, there is the number of hours. While Americans spend about 13,000 hours in schools, they spend 15,000 to 16,000 hours in front of a TV set. Second is the age at which viewers start watching TV. People start watching and understanding TV at about the age of 3, which is several years before they start to do school work. Finally, there is the number of viewers. About 90,000,000 young people are attending school, but most of the Americans watch TV every day. It seems, then, that TV shows are taking the place of teachers and professors as the educators in America. Question: In American, a child starts going to school _ . Yes or no, is the answer "when he is about 6 or 7"?
Yes