Read the following article and select the best answer. Article: Amos Dudley, a 24-year-old boy who studies digital design at New Jersey University of Technology, felt ashamed about his teeth. But being a student, Dudley didn't have the money to get braces . So, he decided to 3-D print his own and marked down the DIY project in a recent blog post. His braces totaled less than $60, and after wearing them for 16 weeks, his teeth are also getting straighter. Months ago, he mentioned on his blog that he avoided smiling for a while because he was unhappy with his teeth. However, clear braces can get pricey, costing up to $8,000. But after studying some images of these expensive clear braces, something comes up on him--they looked like that one which can come from a 3-D printer. So he decided to hit up his school's 3-D printing equipment and scanned and printed models of his teeth. He then made non-harmful plastic molds around them to make 12 sets of braces. Dudley, who does not recommend attempting any of this at home said that he didn't ask a dentist for his project. But the student did get information from journal articles and textbooks. And though this was a perfectly friendly choice to buy braces. He didn't accept the project just to save money--he was also up for the challenge. "When I realized that I could do something that was a little bit special, while proving my skills as a designer and a maker, and fixing something that was making me self-conscious for actually free, I felt it was more than worth the risk." he said. Question: Dudley got the information on making a 3-D printed braces from _ . - a professional magazine - a recent blog post - journal articles and textbooks - a 3-D printer user
journal articles and textbooks

Read the following article and select the best answer. Article: Difference John and Bobby joined a company at the same time . They both worked very hard . After several years , Bobby became the manager , but John thought it was unfair , so he gave his resignation to the boss . When the boss found out the reason why John wanted to leave , he said , "I hope you will do one more thing for our company before you leave . " John agreed . The boss asked him to find out if anyone was selling watermelons at the market . John went and soon returned . He said he had found a man selling watermelons . The boss asked him how much they were . John shook his head and went back to the market . When he returned , he told the boss they were $ 1.2 per kg . Then the boss asked Bobby to find a watermelon seller at the market . Bobby went , returned and said , "Only one person is selling watermelons . $ 1.2 per kg , 340 melons in all , and each melon weighs about 2 kg . They are fresh . " John realized the difference between himself and Bobby . He decided not to leave but to learn from Bobby. Question: John and Bobby were _ . - friends - workmates - classmates - brothers
workmates

Q: Read the following article and select the best answer. Article: Fifty-three years ago Barbie Millicent Roberts first appeared in the world of toys. Since then, Barbie doll, as everyone called her, has become the most successful toy doll in history. Her parent, the Mattel Company, said that 90% of all American girls between 3 and 10 have at least one Barbie at home. However, Barbie is facing some trouble at present . There are many similar dolls on the market in competition with her. Another doll named Bratz, for example, came to life thirteen years ago. She looks more like today's pop stars with heavy makeup and miniskirts. And her company offers more kinds of clothes too. It seems that Barbie has lost her magic among older girls. 'For younger girls, playing with a Barbie is much fun. But when you get older, you want something smarter and more modern,' says Vera Shepherd, a shop assistant in a New York toy store. It is good news that on the international market, Barbie is still No. 1. Although Mattel is selling fewer barbie in the United States these years, sales in other countries are still going up. In January 2009, Mattel opened its first Barbie store in Shanghai, where girls can shop, eat, drink or even become _ for their own Barbies. Mattel is planning big celebrations for Barbie's 53rd birthday. She has called Fashion designers from all over the world to make new dresses for Barbie. How long will Barbie stay popular in the world of toy dolls? It is hard to say, but 53 is surely not the age to retire . Question: Girls can do the following in the first Barbie shop in Shanghai except _ . - going shopping - having food - drinking juice - taking photos
A: taking photos

Question: Read the following article and select the best answer. Article: In northern China winter is long and cold, lasting from December through March. You can often see snow. Summer lasts from May through the end of August. The best time to visit northern China is spring and autumn. The days are warm but the nights are cool. Winters in central China feel colder than they look. You will seldom see snow. Winters are short, lasting from January to the end of March. Summers are long hot and humid, lasting from April through September/October. In spring flowers are blooming and the tree's leaves turn green so there is an air of freshness. However, autumn usually sees clearer skies, and it rains a little. It is very wet in the south and high temperatures last for a long time. Winter from January to March, is short but can feel very cold. But it doesn't snow. Summer through September is the rainy season where temperatures and humidity reach highs. In autumn the heat and humidity weather stops. There is always a chance of rain. Question: Which part of winter lasts nearly four months? - Northern China - Central China - Southern China - None
Answer: Northern China

Q: Read the following article and select the best answer. Article: Scientists are trying to find out how things affect our feelings. How you feel is controlled by many things, such as your personality , the actions of others. Maybe you don't know the weather can affect your feelings as well. People often say they feel good when the sun is shining and sad when it is cloudy. In fact, sunlight makes us feel good. When sunlight hits our skins, our bodies makes vitamin D(D). Vitamin D helps our bodies make a special chemical . This special chemical affects our brains and makes us feel happy. For example, there are long, dark winters of little sunlight in Sweden and Norway, so many people in these countries often feel sad. To help the people in these countries feel better, scientists build special "sunrooms" for people to go there and get "sunlight" for an hour or two! The weather can also affect people's feelings in other ways. Hot weather can make people angry because people don't feel comfortable when they are hot. In the same way, rain can make people angry because being wet can be unhappy. As you can see, the weather can have an effect on the chemicals which control our _ . Through these ways, the weather can affect our feelings in these ways. Sadly, while the weather can change us, we cannot change the weather. Question: What can we infer from the passage? - We will feel good when we are in the bright cool weather. - We will be happy when we are in the rain. - All people in Norway and Sweden feel sad in winter. - The less vitamin D you have, the happier you'll be.
A: We will feel good when we are in the bright cool weather.