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: That flowers have the sense of time is related to _ . Yes or no, is the answer "the "inner clock""?
No

Article: Do you know the famous pop singer, Han Geng ? He was born on Feb. 9, 1984.In fact, he is really a handsome boy. He is 181cm high. He can dance, sing , and do a little Kungfu He is in the famous group of Super Junior. I think he sings best .He is my favorite singer. He not only loves singing and dancing very much but also can dance 56 kinds of dances. And he can also play in the movie very well. He loves the stage very much and he loves his fans very much ,too. Everyone who knows him says he is really a kind boy. His best friend is Kim Heechul, who also belongs to the Super Junior. They are best friends in the group. Question: How many kinds of dances can he dance? Yes or no, is the answer "Fifty-six"?
Yes

Article: Tom walked into a shop. It had a sign outside:" Second-hand clothes bought and sold. " He was carrying an old pair of trousers and asked the owner of the shop." How much will you give me for these?" The man looked at them and then said, "Two dollars ." "What!" said Tom. "I had guessed they were worth(...) at least five." "No," said the man, "they aren't worth a cent more than two dollars." "Well," said Tom. Taking two dollars out of his pocket, "Here's your money. These trousers were hanging outside your shop. The list price of them was six dollars and a half. But I thought that was too much money, so I wanted to find out how much they were really worth. " Before the shop owner could think of anything, Tom walked out of the shop with the pair of trousers. Question: The shop owner insisted that the trousers were worth only two dollars because _ . Yes or no, is the answer "he wanted to buy them cheaply"?
No