Article: Most British telephone cards are just plain green, but card collecting is becoming a popular hobby in Britain and collectors even have their own magazine, International Telephone Cards. One reason for their interest is that cards from around the world come in a wide variety of different and often very attractive designs. There are 100, 000 different cards in Japan alone, and there you can put your own design onto a blank card simply by using a photograph or a business card. The first telephone cards, produced in 1976, were Italian. Five years later the first British card appeared, and now you can buy cards in more than a hundred countries. People usually start collecting cards because they are attractive, small and light , and they do not need much space. It is also a cheap hobby for beginners, although for some people it becomes a serious business. In Paris, for example, there is a market where you can buy only telephone cards, and some French cards cost up to 4, 000 pounds. The first Japanese card has a value of about 28, 000 pounds. Most people only see cards with prices like these in their collectors magazine. Question: When did people in Britain begin to use phone cards? Yes or no, is the answer "In 1981."?
No

Article: Dog owners now have a little help understanding their furry friends . A new device called Bow-Lingual "translates" dog barks into English , Korea or Japanese. Bow-Lingual's Japanese inventors spent much time and money analyzing dog barks . They found that dog noises can be broken down into six different emotions : happiness , sadness , frustration , anger , assertion and desire . Part of the Bow-Lingual device hangs on the dog's collar . The other part is a handle-held unit for the owner . When the dogs barks , the unit displays translated phrases . Some people have scoffed at Bow-Lingual. "Who would pay US$ 120 to read a dog's mind?" they ask . But those who have purchased Bow-Lingual praise the device . Pet owner Keiko Egawa , of Japan , says it helps her empathize with her dog , Harry . "Before we go to the park , he always says he wants to play," says Egawa , "and after a walk , he always says he is hungry." Bow -Lingual is not yet available in Chinese . So you'd better keep studying Studio Classroom , or soon your dog may know more English than you do ! Question: This passage is mainly talking about _ . Yes or no, is the answer "a little help for dog owners"?
No

Article: Sleepwalking is a sleep disorder. Your child will rise from bed and walk or engage in other activities that they would normally do when they are awake. Their eyes will be open but they will appear to be in a dream-like state, and will probably not answer when you talk to them, although they may carry out conversations. Sleepwalking can last a few seconds , a few minutes, or more. Sleepwalking can be an indication that certain parts of the brain may not be relaxing properly at bedtime. It can be caused by illness or fever, tiredness, stress or anxiety. It is thought to occur in the beginning, slow-wave stages of non-rapid eye movement sleep before dream sleep. It may be related to the lack of magnesium , and it is very possible that hormonal changes in body could cause it. Certainly a child is more likely to be a sleepwalker if one of his parents suffered, too . Sleepwalking itself is not dangerous and is generally not a sign of any more worrying problems. But if your child sleepwalks regularly, you have to take safety measures to make sure that he doesn't hurt himself while sleepwalking. Makes sure that any doors can't be opened by a child, and lock doors to the cellar, kitchen and other dangerous places. Check each night before lights go out for sharp objects or, indeed , anything on the floor which your child could trip over or hurt himself on. A child may sleepwalk once and never sleepwalk again. Others may sleepwalk once a month or so. Still others may sleepwalk almost nightly. If you are worried you should consult your doctor. Question: Which of the following is true according to the passage? Yes or no, is the answer "Sleepwalking itself is not dangerous."?
Yes