The doctor handed me my medicine and said sorry to me because his register had already closed. He asked if I would mind using the register at the front of the store. I told him not to worry and walked up front. One person was in line ahead of me, a little girl no more than seven with a bottle of medicine on the counter . She held a little green and white coin purse closely to her chest . The purse reminded me of the days when, as a child, I liked dressing myself up in my grandma's clothes. One day, wearing her large clothes and hat, I went out to buy something. I gave a fake dollar to the shop owner, but he handed back some real coins for my purse. "Keep the change!" he told me with a smile. Now, with both hands shaking, the little girl pulled out a dollar bill and some coins for her medicine. As she tried to count her money, I could see right away that she was about a dollar short. Quickly, I put a dollar bill onto the counter. The child collected her change into her coin purse and ran out. As I walked to my car, I felt a tug on my shirt. There was the girl, looking up at me with her big brown eyes. She gave me a smile, and put out her little hand. It was full of coins. "Thank you," she said. "That's OK," I answered, smiling. "Just keep the change!" The writer told the girl to keep the change because _ . A) the writer didn't need it B) the writer wanted to pass on love C) the writer was in a hurry D) the writer didn't like coins
B
What do butterfly wings have to do with computer screens? What do birds have to do with high speed trains? These may sound like strange things to put together. But scientists, inventors, and designers are doing just that. They are learning from nature to create new technology. The word biomimicry combines two words: biology and mimicry. So people using biomimicry try to use examples in nature to design new technology. Biomimicry is not a new idea. People have been studying nature for hundreds of years. Leonardo DaVinci used birds as models to invent his flying machine. And when the Wright Brothers made the first successful airplane, they also studied birds. In 998, Janine Benyus, a natural science writer and teacher, wrote a book about biomimicry. To develop her interest in the subject, Janine Benyus started the Biomimicry Institute. The Biomimicry Institute is a non-profit organization. It brings together scientists, designers, inventors and many other people. It offers classes to teach people biomimicry. It provides money for people to research and test new technologies. And it wants all people, from children to adults, to think about new ways to learn from nature. People involved with the Biomimicry Institute believe that biomimicry can help solve many of the world's problems. Often, new technologies can harm nature, but this is not true for biomimicry. Let's look at some examples. Butterflies have colorful wings because light shines off them in a special way. Scientists want to copy these same ways to make light shine off computers. They hope this will make for more colorful screens. Another example of biomimicry is the bullet train. It travels at speeds of over 250 kilometers per hour! But it had a problem: it made too much noise! Through the observation of birds, scientists thought about a kind of bird, the kingfisher . The kingfisher can dive into water without making any noise because of the shape of its beak . Researchers thought that if they could design the front of the train like this beak, the... The author gives the two examples at the end of the text to show _ . A) biomimcry works harmoniously with nature B) the fast development of modern technology C) how biomimcry changes our life D) how nature inspires scientists
A
*Question*
Every person leaves a footprint. That's what I learnt when I started to work as a private investigator 10 years ago.People pay restaurant bills with their bank card,check into hotels or travel around. In every case,they leave a trace.And because of this,I'm able to track them down even when they don't want to be found. The first thing I do when I want to find out where someone is staying is to go to the neighbourhood where he used to live.It's human nature to tell stories--which is why neighbours will tell me all they know when I ring at their houses.Sometimes,someone even talks about his friend's dishonesty.Then I produce a pattern of my subject's life:if he likes to have a holiday in Spain or in Italy,if he prefers two- or three- star hotels and where he might hide his assets .When I've got this life pattern,I start my rescarch. Nine times out of l0,I find the people I'm looking for.I once investigated a lorry supplier who owed PS500,000 to a subcontractor .The subcontractor wanted to find out if it was worth bringing charges against the supplier.I found out the supplier had moved assets to his son,who founded a new company offering the same product.It was a11 done within the law.There was no money to be got from that operation. However, I asked the son if I could speak to his father and he told me that his parent was on a long holiday in Spain and wouldn't be back for a while.It didn't take me long to find out that the father wasn't in Spain. I went back to the son and this time he told me that his father might be in Bulgaria,and I found him doing winter sports in a beautiful mountain area.He was 1iving in a big house on a 1arge piece of land he had bought for ie 400,000.This was exactly the kind of asset my customer was loooking for. The lorry supplier moved his assets to his son in oder to _ . A) pass on his debt to his son B) double the business of his company C) le this son take over his lorry business D) prevent paying back the money he owed
**Answer**
D