【文章內(nèi)容簡(jiǎn)介】
r find a pany to help you. There are many videos and websites that can teach you to build one. Some websites provide building blocks for app developers. As you build, you pick blocks from the website and put them in your app. After you build your app, you need to check it carefully. Look for bugs. Most apps have several problems to fix. Show your app to people. Ask their opinions. Mike sure everything works before letting people download it. There are so many tools that can help you build apps. Having the right tools will make the work easier. Now almost anyone can make a new app. 29. What are bugs according to the article? A. Insects. B. Opinions. C. Problems. D. Tools. 30. Which magazine would probably have this article? A. Outdoor Adventures. B. Business News. C. Modern Fashion. D. Technology Today. C There is an old story about a king and his daughter. The king asked his daughter how much she loved him. She said that she loved him as much as she loved salt. Her answer made the king sad. Salt is a simple thing, and it is very mon. So the king thought his daughter didn39。t care about him. But the king was wrong. Salt might be mon, but it is very important. Throughout history, salt has caused wars. So why do people care so much about salt? Salt has many uses. Our bodies need salt. If we don39。t have enough, our body can39。t work properly. We put salt on icy roads to make them safe. We also use salt to produce other products. Products like paper, glass, rubber and soap depend on salt. But for many years, salt39。s most important job was preserving(保存 )food. Like other living things, most bacteria(細(xì)菌 )that cause food to spoil need water to survive. Salt absorbs large amounts of water, so most bacteria cannot live in a salty environment. As a result, salt has the ability to preserve almost anything. For much of human history, this ability has made salt treasured. Every ancient culture from Egypt to China depended on salt. Even today, we pare hardworking, useful people to salt by calling them the salt of the earth. For centuries, salt was also hard to get. The bination(組合 )of usefulness and rarity made it extremely expensive. Since almost everyone needed salt, the salt trade was an important business. Salt could even be used like money. In fact, the word salary(工資 )es from the word salt. And valuable people are still described as being worth their salt. Today, salt is easy to get. It is no longer expensive, but it is still both important and useful. the first paragraph, the writer is trying to make readers . A. bee interested in the old story B. understand the importance of salt C. fall in love with salt D. understand the daughter39。s love to salt 32. Which of the following is NOT true according to the article? A. Salt is very mon, but it has many uses. B. Salt was so valuable that it was once used like money. C. Although salt is cheap now, it39。s still important and useful D. We can use salt to produce all the products we need. 33. What39。s the meaning of the underlined word rarity? A. the quality of being rare B. the quality of being important C. the quality of being mon D. the quality of being useful D Gareth Ellis, 13, is the youngest son of Alan, an engineer, a