It took courage to stand up at work. Now more and more people like to have a change and stand up when they are on something important. Standing up is popular. Medical researchers have found that people who stand at work tend to be much healthier than those who sit. In the last few years, many office supply companies have begun to sell the adjustable- height desk. These so- called " sit/ stand" models are equipped with an electric motor that lets them shift from chair height to person height at the push of a button. Unfortunately, they're regarded as specially furniture. Sit/ stand desks tend to be expensive, hard to find and not easy to test it in person. When you worked standing up, your mind was more excited and new ideas kept coming out. This is because when you're standing, you feel a bit _ from your desk. If you got stuck on a word or sentence as you wrote, you found yourself shaking your arms, bouncing on your feet or stepping away from the desk for a bit------ things you couldn't do in a chair. Often, standing up seemed to relax your mind enough for you to get over creative barriers. There's one other thing about standing for a long time;  you tended to get hungrier than you do when you sit on a chair. That felt like confirmation of the stand-up advocates' belief that you burn more calories when you stand than when you sit. For this reason alone, I'm hoping that sit/ stand desks one day hit the mainstream, with mass- market furniture companies making many low- priced versions. We could all do with a bit more standing up. We can learn that the adjustable- height desk is  _  . A) easy to find B) easy to test C) relatively cheap D) smart in operation
D


For years, children in the industrial areas of Europe and America seldom left their smoky cities to see the beauties of the countryside. This was not because the woods and fields were always far away, but because they were too far from the city to permit people to make a day trip between morning and nightfall.          In 1907, a young German schoolmaster had an idea which changed this state of affairs. He decided to turn his little schoolhouse into a dormitory for the summer holidays. Anyone who brought his sleeping bag and cooking equipment along could stay there for a very small quantity of money. The idea was a success. A few years later, the schoolhouse was much too small to hold the many young people who wanted to stay there. As a result, a dormitory was set up in an old castle nearby. This was the first Youth Hostel.          Today, young students and workers of every country can meet in the hostels and get to know each other. When young people arrive at a hostel, they have only to show their card of membership in a hostel organization in their own country. This card will permit them to use the facilities of hotels all over the world for a very low price.          Often, at the evening meal, a group of boys and girls from various parts of the country or the world will happen to meet at the same hostel. They may put their food together and prepare a dinner with many kinds of dishes. Sometimes a program will be organized after the meal, with dances, songs, or short talks followed by a question period. One can learn a lot of things about other places, just by meeting people who come from those places. For this reason, a few weeks spent "hosteling" can be just as useful a part of one's education as classes in school. From the passage we may see that hostels are important mainly because they  _  . A) do not cost very much B) are nice places to spend the night C) get people from different places to meet each other D) offer good service
C


Q: Roslyn Hing School on long Island recently started a pilot program using iPads in some classrooms. A growing number of schools across the U.S.are multimedia,history through gamse and math with step-by -step animation of complex problems. As part of a pilot program,Roslyn High School handed out 47 iPads on Dec.20,2010 to the students and teachers in two humanities classes. The school district hopes to provide iPads eventually to all 1,100 of its students. The iPads are to be used in class and at hom during the school year to replace texbooks,allow students to correspond with teachers and tum in papers and homework tasks,and preserve a rocord of student work in digital files. "It allows us to extend the classes beyond _ "said larry Reiff,an English teacher at Roslyn who now posts all his course mateials online. But educators are still divided over whether practices to give every student a laptop have made a difference academically. "Thre is very little evidence that kids learn more,faster of better by using these machines,"said Larry Cuban,a retried professor of eduction at Staford University."IPads are excellent tools to attract kids,but then the fieshness wears off and you eget int hard-core problems of teaching and learning." But school leaders say the iPad is not just a cool new toy but rather a powerful and multifunctional tool with a number of applications,including thousands with educational uses. "If there isn't an application that does something I need ,there will be sooner or later,"said Mr.Reiff,who said he now used an application that includes all of Shakespare's plays. We can infer from the passage that  _  . A) most old teachers are against the pilot program B) students have achieved a lot after using iPads C) teaching will become less important with the help of ipads D) iPads will be used is more and more schools in the US
A: D


Q: Don't you hate it when someone snubs you by looking at their phone instead of paying  attention? The word "Phubbing", which comes from "phone" and "snub", describes such behavior . With popularization of smart phones, we see a new "Phubbing" group everywhere in public places: in subway, restaurants, roads, people are checking the mobile phone, ignoring the people around completely. What is worrying us is that not only young people, but also the elderly and kids are getting addicted to Phubbing. On Dec 29th, a 28-year-old woman--a mother of two in Wenzhou, drowned after she fell into a river while looking at her mobile phone. A Pakistani man was killed on Dec 15th, 2015, after being hit by a fast moving train while trying to take a selfie  with it on the track. Last month, Justin, a college student was shot in subway in San Francisco, the U.S. The surveillance video showed that before Justin was killed, the killer pulled out the gun several times, and even wiped his nose with it. However, nobody noticed that. The surrounding passengers all focused on their cell phones. Phone is the tool for communication, but now it distances people and makes them separated from each other. Therefore, someone jokes "the furthest distance in the world is not the distance between life and death, but that you don't know I stand in front of you while you focus on the mobile." Phubbing appears harmless; however, it does affect our life. 23-year-old Alex from Melbourne wrote in his blog: "I can no longer focus on what I am eating since I started twittering. My skill of food photography has improved very fast, while my interest in food drops a lot as a result." The author gives several examples in Para.2 to  _  . A) show the phubbing people are dangerous. B) tell people the bad effects of phubbing C) say phubbing is more and more popular. D) warn people not to use phones any more.

A: B