Q: Read the following article and select the best answer. Article: From furniture to jewelry, from the medical industry to civil engineering,three--dimensional printing can turn all sorts of ideas into objects. "I wanted to print large objects such as buildings,"said Behrokh Khoshnevis,professor of the University of Southern California.He planned to construct a house in 24 hours by applying 3D printing techniques,but he admitted there would be difficulties in meeting his goal. "For example,if you run out of ink while printing on paper,you will throw that paper away.But you cannot throw half completed buildings away if your material gets stuck,"he said.Although the printed house is not available to visit,there is a chance for people in Shanghai to see items printed in 3D. The Belgium-based company Materialize NV is currently holding a 3D printing exhibition in Shanghai that started in late 2012 and will continue until the middle of this year.The company is eager to show Asia what is possible with 3D printing. "All the pieces shown here are what cannot be made through traditional techniques. A good example of this customization is hearing aids More than l0 million people already use 3D printed hearing aids.all made according to the size of their ear."said Wim Michiels, executive vice-president at Materialise NV. "You can produce anything whenever and wherever you like.You don't need to set-up production lines for pieces that only need a limited amount of product.Setting up a production Line is a tot of work, takes a long time and is very expensive for a limited number of pieces" said Michiels. Kim Francois,managing director of Matcrialise China,said their European and American clients have at ready made the next step toward additive manufacturing with small-series production such as hearing aids. Question: According to the text,3D printing is suitable for_. - mass production - making small items - small series production - reducing production costs
A: small series production

Q: Read the following article and select the best answer. Article: This summer, Monika Lutz's life took an unusual turn. Instead of heading off to college, the high school graduate packed her bags for a Bengali jungle. Lutz, like a growing number of other young Americans, is taking a year off. Gap years are quite common in Britain and Australia, but they are just beginning to catch on in the U.S. Lutz, who grew up in Boulder, Colo., has put together a 14-month schedule that includes helping deliver solar power to some communities in India and interning for a fashion designer in Shanghai---experiences that are worlds away from the lecture halls and university dormitories that await other students. "I could not be happier," she says. Why are students attracted to the gap-year concept? According to new survey data from Karl Haigler and Rae Nelson, education-policy experts and co-authors of The Gap-Year Advantage, the most common reason for this is to avoid burnout. "I felt like I was focused on college as a means to an end," says Kelsi Morgan, an incoming Middlebury College freshman who spent last year interning for a judge in Tulsa, Okla., and teaching English at an orphanage in the Dominican Republic. The hope is that after a year out of the classroom, students will enter college more energized, focused and mature. That can be an advantage for colleges too. Robert Clagett, dean of admissions at Middlebury, did some research a few years ago and found that a single gap semester was the strongest predictor of academic success at his school. Most experts recommend securing a spot in college before taking a gap year and warn against using the time off to lengthen your resume. "Most admissions folks can see right through that," says Jim Jump, the academic dean of St. Christopher's School in Richmond, Va. But for students like Lutz, who, after getting rejected from five Ivies, decided to take time off, a gap year can help focus interests. Lutz now plans to apply mostly to non-Ivies that have strong marketing programs. "This experience has really opened my eyes to the... Question: The students take gap years mainly because _ . - they want to be more unusual - they want to refresh themselves - some experts advise them to do so - their parents think it good for them
A: they want to refresh themselves

Q: Read the following article and select the best answer. Article: When I set out to drop my dad of fat the airport,it was dark and dreary .It started to rain on the way.When I left the airport,the visibility wasn't clear because of the drops of rain.It was before 6 am. Even though the road conditions were poor,I drove at my normal speed.I was angry with the more cautious drivers ahead of me that were delaying my drive.The exit ramp to the highway was a tight spiral .It is a dangerous spot in good weather and totally scary when the weather is miserable or it is dark.But I didn't want to slow down and arrive home any later than necessary.I drove down the ramp too fast.The road was wet and my car slid,landing face down on the passenger side. I didn't like to drive by myself at the time and had debated taking my husband and son with me on the trip.Thankfully,I was alone in the car.My accident was slight.In fact, I was lucky enough not to have a single scratch.I _ to think the injuries my son would have suffered had he been in the backseat of that car with no seatbelt when it rolled.After the ear rolled three times,I found my mobile phone was lost in a pile of small things that were all lying in the bottom of the car.A lady was kind enough to let me borrow her mobile phone,but with-out the numbers preprogrammed who could I call? I was lucky enough to remember my father's mobile phone number,and fortunate that he hadn't yet got on his plane. You never know when an accident will happen.As a driver,I will keep safety in mind by obeying all traffic laws and have safe-driving habits,especially in bad weather.Insist your children always wear their seatbehs.Life is a journey and everyone should value it and enjoy the ride. Question: Why was the author angry with those drivers? - She thought they drove too slowly. - They made much noise on the ramp. - They didn't pay attention to the safety. - They tried to stop her car on the ramp.
A: She thought they drove too slowly.