Article: An old and very rich friend of mine told me he had an unpleasant experience. He went to a famous jewelry shop and asked to be shown some gold necklaces. After examining several minutes, he decided to buy a gold necklace with a precious diamond, and asked if he could pay by cheque . The assistant said that was quite in order, but the moment my friend signed his name, he was invited into the manager's office. The manager was very polite, but he explained that someone with exactly the same name had given them a worthless cheque not long ago. My friend got very angry when he heard this and said that he would buy a diamond necklace somewhere else. When he got up to go, the manager told him that the police would arrive at any moment and he had better stay unless he wanted to get into serious trouble. Sure enough, the police arrived soon afterwards. They were polite, too, but explained that a person who had used the same name as his was responsible for a number of recent robberies. Then the police asked my friend to copy out a note which had been used by the thief in a number of stores. The note read, "I have a gun in my pocket. Ask no question and give me all the money in the drawer." Luckily, my friend's handwriting was quite unlike the thief's. He was not only allowed to go without further delay,but also to take the diamond necklace with him. Question: The police were polite, too, because _ . Yes or no, is the answer "they were not sure whether the man was the thief they wanted"?
No

(Question)
Article: The leftovers in the fridge smelled a little unusual, but you ate them. You were so hungry that you didn't even heat them up. Later, you started to feel sick. Powerful waves of pain rumbled through your stomach. They went away, but not for long, then you even threw up. That sounds like the case of food poisoning. No one put poison in your food, but bacteria probably grew in the food in the fridge and those bacteria made you sick. Food poisoning can be mild and last just a short time or can be more serious. Food poisoning comes from eating foods that contain germs like bad bacteria, which are poisonous substances. Bacteria are all around us, so mild cases of food poisoning are common. You may have had mild food poisoning with diarrhea and an upset stomach --- but your mom or dad just called it a stomach bug or stomach virus. You might think the solution is to get rid of all the bacteria, but it isn't possible and you wouldn't want to do it, even if you could. Bacteria are all around us, including food, and sometimes they can be good for you. It's confusing, but one thing is for sure ---- You can, however, learn how to avoid those bad germs in food. Foods from animals, raw foods, and unwashed vegetables all can contain germs that cause food poisoning. The most likely source is food from animals, eggs, milk, and shellfish. To avoid food poisoning, people need to prepare, cook, and store foods properly. Question: According to the passage, if you want to avoid food poisoning, you'd better _ . Yes or no, is the answer "fully heat up the foods from the fridge even if they aren't rotten"?
(Answer)
Yes

Ques: Article: Kids are far better than adults at learning how to speak multiple languages. Research now shows that very young infants might have some of the best language skills of all. A new study suggests that babies between 4 and 6 months old can tell the difference between two languages just by looking at the speaker's face. They don't need to hear word. Sometimes between 6-8 months of age, babies raised in homes where just one language is spoken lose _ . Babies from bilingual homes, on the other hand, keep the face-reading ability until they're at least 8 months old. Researchers in prefix = st1 /Canadastudied 36 infants from English-speaking families. Twelve of the babies were 4 months old,12 were 6 months old, and the rest were 8 months old. Each baby sat on his or her mother's lap and watched video clips of a woman talking. The woman was fluent in both English and French. In some clips, she read from a storybook in English. In other clips, she read in French. In all of the videos there was no sound. After watching clip after clip of the woman reading in just one language, the babies eventually started to look away, apparently because they were bored. The researchers then showed the babies a new silent clip of the woman reading a story in the other language. At that point, the 4-month-olds and 6-month-olds started looking at the screen again. The 8-month-old,by contrast, paid no attention. That suggests that a baby's ability to distinguish between languages get lost before 8 months of age. "Visual information about speech may play a more critical role in language learning than previously expected," says researcher psychologist Whitney. It's not yet clear, she adds, which part of the speaker's face babies are looking at for clues. Next, scientists want to see whether babies can match faces with the voices of foreign-language speakers. If babies can do this, the scientists would then like to know if this ability also declines toward the end of the first year of life. Question: Why did the 8-month-old pay no attention when the language was changed ? Yes or no, is the answer "They had lost the ability to distinguish different languages."?
Ans: No

Question: Article: Many birds migrate. This means that every year they fly somewhere warm in the winter and then return to the place they came from in the spring. One mystery is how birds know how to travel such long distances without getting lost. Scientists have wondered for years whether they are born with the knowledge of where to go or whether they learn it after they are born. Now, researchers have found evidence that shows that one type of bird, at least, learns how to migrate. The bird is the whooping crane , a tall, white bird that lives in the United States. In the 1940s, the number of these birds decreased to fewer than 25 individuals, and many people feared that they would die out. Thanks to efforts to save them, they have now increased to about 600. However, the birds are not very good at taking care of their young. Because of this, eggs are brought to a site in Maryland. There, scientists from the Whooping Crane Eastern Partnership raise the baby birds. Later, the young birds are taken from Maryland to Wisconsin, where the scientists teach them how to fly. From there, they fly about 2,200 kilometers south to Florida to spend the winter. The first time, scientists lead the way in a small airplane. From the second year, though, the birds travel by themselves. For 14 years, the scientists have kept a careful record of every flight the birds have taken between Wisconsin and Florida. They have also recorded which birds fly together, the relationships between the birds, and the gender of each bird. When scientists analyzed the data, they were surprised by the results. These showed that each bird took a very different route. However, as they got older, they flew more and more directly between Wisconsin and Florida. This continued until they were five years old. This indicates that the birds gradually learned the best route to take. Moreover, when an older bird was in a group, the whole group flew more directly. This suggests that the older birds taught the younger ones a quicker route. Scientists say that this evidence... Question: How do scientists from the Whooping Crane Eastern Partnership support young whooping cranes? Yes or no, is the answer "They show the birds how to fly to Florida in their first winter."?
Answer:
No