Article: The next generation telephone is called Superphone or personal Communication Network (PCN). Your superphone goes wherever you go, in your pocket. You can use it in the street, in an aeroplane, a boat, or a taxi; you can call from anywhere on the globe to anywhere else. Calls travel at the speed of light, via satellites using ultraviolet, high-frequency wave bands and each communication is automatically billed to your account. This new phone is the size and shape of a billfold . You unfold it to use it., making it long enough to reach from your ear to your mouth. There is a miniaturized touch pad, on which to enter the number you are calling. There is also a tiny liquid crystal screen on which you can read weather, news or financial reports. These news items are constantly updated by the company that sells the service. Letter keys on the touch pad also allow you to use this electronic marvel as a computer or word processor. You can plug it into your large home or office computer in order to transfer any data that you feed in during a business trip. The PCN also stores any useful information of your own that you might need as you travel, such as the names, addresses and phone numbers of several hundred people, important meetings, flight details and so on. When you need information, you simply call it up on the screen. You can even use your PCN to activate electronically controlled equipment at home. For example, you could switch your oven on or off, start the sprinkler system in your garden during a dry spell, get your video recorder to record a show on television, turn off the central heating, and so on. All of this from thousands of miles away, perhaps from the back of a camel in the desert. Prototypes are already being trialed. In spite of the complex technology, they will be cheap because of the enormous sales that will be made. Question: The next generation telephone doesn't own the function of _ Yes or no, is the answer "a billfold"?
No

Article: About half American teenagers do not get enough sleep on school nights.They get an average of sixty to ninety minutes less than experts say they need. One reason for _ is biology.Experts say teens are biologically programmed to go to sleep later and wake up later than other age groups.Yet many schools start classes as early as seven in the morning.As a result,many students go to class feeling like sixteenyearold Danny.He is an active teen-- except in the morning."Getting up in the morning is pretty terrible.I'm just very out of it and tired.Through the first and second period I can hardly stay awake," he said. Michael Breus is a psychologist.Teens,he says,need to sleep eight to nine hours or even nine to ten hours a night.He says sleepy teens can experience a form of depression that could have big influence on their general well being.It can affect not just their ability in the classroom but also on the sports field and on the road.So what can schools do about sleepy students?The psychologist says one thing they can do is to start classes later in the morning.Studies show that students can improve by a full letter grade in their first and second period classes. Eric Peterson is the head of St.George's School in the northeastern state of Rhode Island.He wanted to see if a thirtyminute delay would make a difference.It did.He says visits to the health center by tired students decreased by half.Late arrivals to the first period fell by a third.And students reported that they were less sleepy during the day.Eric Peterson knows that changing start times is easier at a small school like his.But he is hopeful that other schools will find a way. Question: What can we infer from the passage? Yes or no, is the answer "Enough sleep makes a healthy and active student."?
No

Q: Article: The United States covers a large part of the North American continent. Its neighbours are Canada to the north and Mexico to the south. Although the United States is a big country, it is not the largest in the world. In 1964, its population was over 185,000,000. When this land first became a nation, after winning its independence from England, it had thirteen states. Each of the states was represented on the American flag by a star. All these states were in the eastern part of the continent. As the nation grew toward the west, new states were added and new stars appeared on the flag. For a long time, there were 48 stars. In 1959, however, two more stars were added to the flag, representing the new states of Alaska and Hawaii. Indians were the first people of the land which is now the United States. There are still many thousands of Indians now living in all parts of the country. Sometimes it is said that the Indians are "the only real Americans". Most Americans come from all over the world. Those who came first in greatest numbers to make their homes on the eastern coast of North America were mostly from England. It is for that reason that the official language of the United States is English and that its culture and customs are more like those of England than those of any other country in the world. Question: The first thirteen states were in the _ of the United States. Yes or no, is the answer "east"?
A: No

*Question*
Article: Secondhand smoke isn't just a health threat to people.It can also hurt dogs and cats,veterinarians say. According to the Centers for Disease Control and Prevention,more than 126 million Americans who don't smoke are exposed to secondhand smoke in their homes,vehicles,workplaces,and public places.This exposure causes thousands of lung cancer and heart disease deaths among nonsmokers every year,according to the California Environmental Protection Agency. "Making the leap from the effects of secondhand smoke on humans to their effects on pets isn't a big one," says veterinarian Carolynn MacAllister of Oklahoma State University. "There have been a number of scientific papers recently that have reported the significant health threat secondhand smoke poses to pets," MacAllister said."Secondhand smoke has been associated with oral cancer and lymphoma in cats,lung and nasal cancer in dogs,as well as lung cancer in birds." Studies have also shown that dogs living in a smoking household are susceptible to cancers of the nose and sinus area,particularly if they are a long-nosed breed,because their noses have a greater surface area that is exposed to carcinogens and a greater area for them to accumulate.Dogs affected with nasal cancer normally don't survive for more than one year. "Short and medium-nosed dogs are more susceptible to lung cancer,because their shorter nasal passage aren't as effective at accumulating the inhaled secondhand smoke carcinogens," MacAllister said."This results in more carcinogens reaching the lungs." Birds are also at risk for lung cancer,as well as pneumonia,because their respiratory systems are hypersensitive to any type of air pollutant. To help prevent animals from being adversely affected by smoking,pet owners who smoke should have a designated smoking area that is separated from the home or stop smoking altogether,MacAllister said. Question: From the passage,we can see secondhand smoke maybe not harmful to _ . Yes or no, is the answer "trees"?
**Answer**
No