Question: If you go into the forest with friends, stay with them. If you don't, you may get lost. Sit down and stay where you are. Don't try to find your friends, but let them find you instead . You can help them find you by staying in one place. There is another way to help your friends or other people to find you. You can shout or whistle three times. Stop for a while. Then shout or whistle three times again. Any signal given three times is a help. Keep up shouting or whistling. Always three times together. When people hear you, they will know that you are not just making a noise for fun. They will let you know that they have heard your signal. They will give you two shouts or two whistles. When a signal is given twice, it is an answer to a call for help. If you don't think that you will get help before night comes, try to make a little house with branches . Make yourself a bed with leaves and grass. When you need some water, you have to leave your little branch house to look for it. Don't just walk away. _ When you are lost, the most important thing to do is stay in one place. Which signal is a call for help? A) Shouting here and there. B) Crying and shouting twice. C) Shouting or whistling three times together. D) Whistling everywhere in the forest.
Answer: C

Question: In America, most people don't get enough sleep. Children aged 5 to 12 are advised to sleep 10 to 11 hours every night, but most of them can't sleep that long. A study found that about 41 million American workers got less than six hours of sleep every night. Scientists worry that parents are passing their bad sleeping habits down to their children. In the study, Reut Gruber and some other scientists either added or reduced on hour of sleep for healthy children aged 7 to 11. They watched the children for five nights. They wanted to know if the amount of sleep can affect a child's behavior. Before the study began, students were asked to sleep the same amount of hours as usual. Their teachers were asked to record their behavior. After five nights of the records, scientists found that those who slept one hour less behaved worse than those who slept one hour more. Students with less sleep were more likely to feel sad and had more problems paying attention. The scientists chose to study children in their homes instead of in a laboratory, because they wanted to find out how everyday changes might affect children's behavior at school. "In the study, nobody became a talent, and nobody became crazy. But small changes in children can really make a big difference," says Gruber. Who helped do some new study, children with less sleep _ . A) Teachers. B) Parents. C) Scientists. D) Psychologists.
Answer: A

Question: Cows that are named and treated with a "more personal touch" can increase milk production by up to 500 pints a year. The study, by the university's School of Agriculture, Food and Rural Development, involved 516 farmers across the UK. The study found farmers who named their cows got a 54% higher production than those that did not give their cows names. Dairy farmer Dennis Gibb said he believed treating every cow as an individual was very important. "They aren't just our means of making money. They're part of the family," he said. "We love our cows here and every one of them has a name. All of us regard them as 'our ladies' but we know every one of them and each one has her own personality." Dr Catherine Douglas said, "What our study shows is what many good, caring farmers have long since believed. Our data suggests that UK dairy farmers regard their cows as intelligent beings . They are able to experience a range of emotions ." "Placing more importance on knowing the individual animals and calling them by name can, at no extra cost to the farmer, also increase milk production." ,. Why did the farms want their cows to increase milk? A) Because they wanted to drink more. B) Because their cows can be happy. C) Because the milk is more delicious. D) Because they made by money by selling milk.
Answer:
D