Two space walkers fixed a camera on the outside of the international space station on Monday and threw overboard a data - collecting device , sending it rolling off into space like a football. The new camera will help space station astronauts add new pieces onto the orbiting station. Mr Arthur and his Russian crewmate left the or biting station unmanned during the 5 - hour spacewalk. Normally, one crew member stayed aboard while two others worked outside. But the space station crew has been reduced to two since the space shuttle prefix = st1 /Columbiadisaster in 2003, and it has been left empty nine times during spacewalks since then. The device thrown overboard was once used to collect data on electrical activity around the space station. It was designed to work for only a few months and was no longer needed. Engineers were afraid pieces might break off and damage the space station, so they decided to cut it loose. The device, which weighs about 60 pounds and has solar panels that extend about 2 feet, is expected to burn up in the atmosphere in about three months. Happily, the space walking pair helped each other into their spacesuits without the help of a third crew member. The space walk was put off by an hour because of trouble with the US airlock , which did not depressurize completely at first. But the pair quickly made up for the lost time as they worked outside. It was the first time in two years that space walkers exited through the USairlock. According to the scientists, the device thrown overboard would_. A) return to the earth B) burn up in space in about three months C) be recycled and reused D) stay in outer space for a long time
B
In the book The Best Little Girl in the World, Kessa has a serious eating disorder called anorexia nervosa. But she is not alone. Many people have this eating disorder. In the beginning of her story, Kessa is a normal 15-year-old. She is good at many things, especially dancing. She has danced for many years and loves it. One day her dance teacher tells her to continue eating right, but maybe lose a few pounds. Once Kessa hears this, she takes things too far. Instead of cutting down on snacks and junk food, she decides not to eat at all. She does not eat breakfast, lunch, or dinner. She begins losing weight and becomes slimmer and slimmer. But she loses weight to a point where she is unhealthy. As her poor eating habits continue, her parents start getting as much help as possible to cure their beautiful daughter. But it is just as hard for Kessa's parents to deal with her disorder as it is for her. Everyday she exercises to lose more pounds and plans what and when she will eat. Her parents try everything, but Kessa decides not to have any fat on her body. Kessa's doctor and parents finally take her to the hospital. She is now so thin that she can hardly walk. There, she is given good care. In the rest of the book, Kessa goes through a lot of trouble in order to cure her eating disorder. This book, I think, can help to prevent people from doing this to themselves. It shows the trouble that people go through just to be slimmer, and all the terrible things they must experience to be cured. It is a book I think every teenager should read. What does Kessa do to lose weight? A) She stops eating. B) She eats less junk food. C) She has three small meals a day. D) She dances many more hours a day.
A
Q: A study of a million UK women, published today in The Lancet, has shown that happiness itself has no direct effect on mortality, and that the widespread but mistaken belief that unhappiness and stress directly cause ill health came from studies that had simply confused cause and effect. Life-threatening poor health can cause unhappiness, and for this reason unhappiness is associated with increased mortality. In addition, smokers tend to be unhappier than non-smokers. However, after taking account of previous ill health, smoking, and other lifestyle and socio-economic factors, the investigators found that unhappiness itself was no longer associated with increased mortality. The lead author, Dr Bette Liu, now at the University of New South Wales, Australia said: "Illness makes you unhappy, but unhappiness itself doesn't make you ill. We found no direct effect of unhappiness or stress on mortality, even in a ten-year study of a million women." As in other studies, unhappiness was associated with deprivation, smoking, lack of exercise, and not living with a partner. The strongest associations, however, were that the women who were already in poor health tended to say that they were unhappy, stressed, not in control, and not relaxed. The main analyses included 700 000 women, average age 59 years, and over the next 10 years these women were followed by electronic record linkage for mortality, during which time 30 000 of the women died. After allowing for any differences already present in health and lifestyle, the overall death rate among those who were unhappy was the same as the death rate among those who were generally happy. The study is so large that it rules out unhappiness being a direct cause of any material increase in overall mortality in women. This was true for overall mortality, for cancer mortality, and for heart disease mortality, and it was true for stress as well as for unhappiness. The word "mortality" in the passage means . A) richness B) relaxation C) death D) morality
A: B
(Q).
How much empathy do you feel towards other people? If you saw someone fall off their bike in traffic,would you stop and help--or just walk away? Many people would give in to coldness,go about their business and just do nothing.So it was a big surprise when about 100 bystanders got together recently to move a bus in east London to help a cyclist trapped under it.A video of the incident went viral on social media. According to Zoheb,a driver who stopped his car to take part in the rescue,about five people gathered to move the bus.He says:"There was no chance we could do it,it was more an invitation for other people to help,really." The initiative paid off.Diners from nearby restaurants joined in.There wasn't much coordination but it didn't take long to develop a collective understanding of what the objective was. Spontaneous cooperation among strangers doesn't happen often.People in a crowd are not sure what to do--they don't have a plan.It's one of the reasons bystanders often do nothing,according to Dr Mark Levine,professor of social psychology at Exeter University in Britain."The presence of others can prevent you from helping",he says. The key to positive group behaviour,Levine explains,"is building a sense of shared identity".Action has to be decided quickly,Levine says."The longer you leave it,the harder it is to make a decision.If you don't immediately act then you kind of think'Well,actually I probably couldn't have done anything anyway'." But the people who took the initiative like Zoheb might make a difference.The cyclist ended up in hospital and the images of the collective effort might inspire others to more acts of unity. What can we learn from the text? A) The sense of shared identity makes no difference. B) It's not necessary to make a quick decision. C) It's impossible for strangers to cooperate. D) Collective effort is inspiring.
(A).
D