Read the following article and select the best answer. Article: Weighing too much can damage your health, and obesity is a growing problem for both kids and adults around the world. Sleep might be one answer to the problem. A new study has found that elementary school students who slept too little were more likely to gain pounds. Past studies have shown a link between sleeping less and weighing more, but scientists have had a tough time determining"which came first, the chicken or the egg,"says Julie C. Lumeng of the University of Michigan in Ann Arbor. In other words, it hasn't been clear whether kids who weigh too much have trouble sleeping, or whether sleeping less leads to weight gain. Both scenarios seemed equally possible. To get a better idea of which causes which, Lumeng and her colleagues interviewed the parents of 785 third graders from around the United States. The parents answered questions about how well their kids slept that year. Three years later, the parents answered the same questions. By sixth grade, 18 percent of kids involved in the study were obese. The scientists found no relationship between weight and the students' race or gender. It also didn't matter how strict their parents were, or whether they were boys or girls. Obesity struck all of these groups equally. Instead, sleep seemed to be the key factor. Over the 3 years of the study, the children averaged a healthy 9.5 hours of sleep a night. Some kids, however, slept a lot more -- or less -- than others. For the sixth graders, every hour of sleep above the 9.5-hour average was linked to a 20 percent lower risk of being obese. Sleep appeared doubly important for the third graders. Every extra hour of sleep they got was linked to a 40 percent drop in obesity. Question: How does the author develop the passage? - By listing figures. - By comparing different opinions. - By providing examples. - By conducting a survey.
By listing figures.

Read the following article and select the best answer. Article: My life suffered a lot in summer five years ago. My father died in a car accident,leaving my mother,my two younger brothers and I alone. At that time,I was a senior high school student. After my father's funeral,I had no choice but to drop out of school and work in a factory. I really wanted to return to school and wanted to go to college,but I couldn't. I only hoped to bring up my two young brothers. Life was not easy for me,for I can't afford their tuition even if I worked from day to night without stopping. Without my father's protection,I thought I was a slave to the fate. Later on,something changed my life. I still remember that it was a rainy day. I put myself in the rain and walked slowly in the street. Suddenly the rain stopped!I raised my head and found "the sky" was in fact a dark blue umbrella. Then I noticed a middleaged man with one leg on crutch standing behind me. He said to me,"Why not run without an umbrella?If you didn't run,you would get drenched." The man told me that he was a promoter. He once dreamed of being a policeman,but an accident ruined his dream. Though his present job was not suitable for his legs,it was a wonderful start to him. He was very happy that he didn't lose heart and still "ran" on the road of life... I was encouraged by the man's words. I went to a big city and became an assurance representative. After two years' running,I did well and my family condition turned better little by little. Later I returned to school and succeeded in my entrance to university. Life is like this. When you are in rainy days in your life,if you couldn't find a way to prevent you from being wet,you would be overwhelmed. But if you decide to get rid of it,you'll discover that the rainy days last not so long as you imagine. Question: What happened to the writer at the beginning of the story? - His father died in a car accident six years ago. - He had to drop out of school to look after his sick mother. - He couldn't afford his two brothers' tuition even if he worked from day to night. - He didn't have money to hold the funeral for his father.
He couldn't afford his two brothers' tuition even if he worked from day to night.

Read the following article and select the best answer. Article: Item 78431 The Video Camera Pen $129.95; Available for Immediate Shipment; Order by Phone: 1-800-321-1484 This is the pen that has a built-in video camera, capturing (,) videos or still images with a click of its button.Ideal for use while secured in a pocket, it can capture up to five hours of video. Its battery provides up to two hours of power before requiring a recharge. Item 78098 The Wristwatch Camcorder $149.95; Available for 3-day shipment; Order by Phone: 1-800-321-1484 This is the men's watch with an unnoticeable camera located at the two-o'clock position, yet the watch's hands never make it covered.So you'll be always ready to capture a famous person or a pet's ridiculous actions. The camera's rechargeable battery provides up to two hours of use from a four-hour charge. Item 77918 The only 55 Inch Widescreen Personal Movie Theater $249.95; Available for Immediate Shipment; Order by Phone: 1-800-321-1484 This is the only personal media viewer that provides a private viewing experience just like watching a widescreen 55 inch television from 10 meters away.It connects to a video iPod, iPhone, portable DVD player with two AA batteries providing up to six hours of continuous operation. Item 77281 The Digital Phone Album Watch $99.95 Available for Immediate Shipment; Order by Phone: 1-800-321-1484 This is the watch that vividly displays 120 of your favorite digital photographs.You can download digital photographs to the watch.The watch can be viewed in the Photo Album mode or digital mode (time and date view).A six-hour charge provides up to 10 days of use Question: What do Item 78431 and Item 78098 have in common according to this passage? - They both sell well. - They are both cheap. - They both have unusual appearances. - They both can take photos.
They both can take photos.