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When Captain James Cook traveled around Antarctica in the 1770s by ship, he found no one living there. Today, a few scientists work in Antarctica, but they only spend a short time there.
Many scientists are studying the ozone layer, which is getting thinner and thinner worldwide. The biggest “hole” is above Antarctica, and weather there is getting warmer. Scientists think that this cold and lonely place can teach us a lot about the earth and how to keep the earth safe.
小题1:When did Captain James Cook travel around Antarctica?
| A.In the 1670s. | B.In the 1760s. | C.In the 1770s. | D.In the 1780s. |
| A.冻土层 | B.大气层 | C.臭氧层 | D.高压层 |
| A.Two. | B.Three. | C.Four. | D.Five. |
| A.Antarctica is much bigger than Australia in size. |
| B.Scientists spend a long time in Antarctica. |
| C.There is no plant growing in Antarctica. |
| D.In winter, it’s dark for about 70 days in Antarctica. |
| A.Because there are more and more people living there. |
| B.Because the ozone layer is being destroyed. |
| C.Because the sun shines a long time every day there. |
| D.Because the weather in other places is getting warmer. |
But things are changing. High costs, unusual educational needs and long start-up times are no longer an obstacle(障碍) to space exploration. The scientists have developed a new type of tiny, inexpensive earth-orbiting(轨道) satellite.
So far, college students have built and launched(发射) several cube-shaped satellites, or CubeSats. At least 15 more are ready to go. Those already in orbit take pictures, collect information and send it back to the earth, just as regular satellites do.
But you might not even have to wait until you get to college to start designing and building your own satellite. A new program called KatySat aims to get teenagers to take part in. When kids understand what satellites can do, the kinds of ideas they’ll come up with may be countless.
Education isn’t the only aim of CubeSats because these tiny, technology-filled boxes are inexpensive to build and can be put together quickly, they’re perfect for testing new technologies that might one day be used on major space tasks.
The biggest challenge now is to find ways to bring the satellites back to the earth after a year or two. Or space junk could gradually increase because CubeSats become more popular.
Nowadays, college and high school students are getting a chance to learn what it takes to explore in space. Someday—perhaps a lot sooner that you imaging—you might get to design, build and launch your own satellite. If you do, you’re sure to have fun. And you might also get crazy about science for life.
小题1:Building a traditional satellite __________.
A. costs $250,000
B. needs college students
C. takes quite a long time
小题2:Compared with the traditional ones, the new satellites __________.
A. need long start-up times
B. are cheap and small-sized
C. collect more junk in orbit
小题3:The underlined word “countless” in Paragraph 4 probably means “__________”.
A. 无用的 B. 无价值的 C. 无数的
小题4:According to the passage, which of the following is true?
A. CubeSats could possibly cause pollution in space.
B. Scientists designed CubeSats for kids to play with.
C. Students can’t design satellites without college education.
小题5:The purpose of the author writing the passage is __________.
A. to tell us that satellite technology can also be learned by kids
B. to show that high technology brings a big change in kids’ life
C. to tell us that kids must study hard to learn satellite technology
The ostrich(鸵鸟) is a bird in the deserts of Africa. It is the largest of all birds. It has a long neck, a small body and two small wings. Sometimes the ostrich is called “camel bird”. Like the camel, it lives in the deserts, and can live a long time without water.
The ostrich’s legs are very long and strong, but its wings are small, and it cannot fly. The ostrich can run very quickly—30 miles per hour. The nest of the bird is a great hold in the sand. There the ostrich lays 10 or 12 large eggs. She watches her nest and leaves it only during the hottest part of the day.
The ostrich likes eating. Sometimes it eats small stones that help grind up (磨碎) food. People like their feathers very much. They cut them sometimes, but this does not hurt the birds. The feathers can grow again.
1. Where can people easily find an ostrich in Africa?
A. In the rivers. B. In the sky. C. In the forests. D. In the deserts.
2. How many miles can an ostrich run in three hours?
A. 30. B. 60. C. 90. D. 100.
3. How many eggs can an ostrich lay once?
A. Less than ten. B. More than fifteen. C. About ten. D. About fourteen.
4. Why does the ostrich eat stones?
A. They’re good for it to digest (消化) food.
B. It thinks they are delicious.
C. It has nothing else to eat.
D. They are its main food.
5. Which of the following is true according to the passage?
A. The ostrich will die if it has no water to drink for two days.
B. The ostrich has wings but it cannot fly like other birds.
C. The ostrich often lays its eggs in the tree.
D. If an ostrich’s feathers are cut, it’ll die.
查看习题详情和答案>>If you have failed in the past to try to make big changes in life, try again now, one tiny step at a time.
Every year it's the same. As December comes to an end, you think about the new year and all the ways you want to improve your life. But as you start to write down your hopes for the new year, you think about the last year. You excitedly write down all the changes you are going to make, but by the end of January those ideas get lost in your busy life.
Here's a suggestion: Forget the too big, hard-to-achieve goals and just think about the small ones. “We often think that we have to do everything in big steps, even though it's so hard for us to reach it.” said Robert Maurer, who recently wrote the book One Small Step Can Change Your Life. “What we try to do is to begin with such a small step that we can’t find any excuse not to do it.”
“Kaizen”, a Japanese word, is used to mean to change behavior and attitudes (态度). During World War II, American factory managers were able to increase productivity by trying small, continuous improvements instead of sudden changes. After the war, the idea was brought to a rebuilding (重建) Japan. It made Japan develop fast. The Japanese called it “kaizen”, which means “improvement”.
Maurer studied the idea and did some experiments with it. “Kaizen” could possibly help people succeed in doing everything.
【小题1】At the end of December, people usually ___________ .
| A.plan for the last year | B.fail to make big changes |
| C.try to lose their ideas | D.think about the new year |
| A.we should do everything in big steps |
| B.how to find a small step without any excuse |
| C.we should try a lot of sudden changes |
| D.how to change one’s life with one small step |
| A.增加成本 | B.提高待遇 | C.提高生产率 | D.增加出口量 |
| A.take a tiny step to achieve big goals |
| B.make changes at the end of the year |
| C.do few experiments with “kaizen” |
| D.do things with hard-to-achieve goals |
| A.You can't find any excuse not to reach a big goal. |
| B.You can achieve your goals if you are not too busy. |
| C.”Kaizen” was brought to Japan during World WarⅡ. |
| D.Robert Maurer studied “kaizen” and found it helpful. |
To learn English well, you need two things-passion and good learning methods (方法). Passion is the more important one. Why? Because passion makes you want to learn English. Learning methods only tell you how to learn it better and faster.
If you love learning English, you will learn it regularly (有规律地) and spend much time on it. It will also be easy for you to remember new words and grammar rules. ________ For example, some people like history and know a lot about World War II. If you ask a person who doesn’t like history to memorize all the facts, he probably can’t do it.
When you don’t want to learn English, you can do the following things.
First, imagine that you can talk to native speakers just as you talk in your mother language. Imagine yourself to be a manager in a foreign company. Imagine you’re living in an English-speaking country.
Second, use English as much as possible. This is very important. The more you use English, the better you’ll learn it. English is very popular, so you can use it everywhere. You can watch American cartoons, write English diaries, and read interesting books written in English.
小题1:The underlined word “passion” means “______” in Chinese.
| A.态度 | B.热情 | C.步骤 | D.情绪 |
| A.You can’t memorize everything while learning English. |
| B.You will find it hard to learn English. |
| C.That’s because you can easily remember what you like. |
| D.Everyone likes to learn what they like most. |
| A.Go to English-speaking countries. |
| B.Read interesting English books. |
| C.Stop learning it for some time. |
| D.Listen to music or play sports. |
| A.You need two things if you want to learn English well. |
| B.It’s difficult for a person to know a lot about World War II if he isn’t interested in history. |
| C.Learning methods are more important than passion. |
| D.It’s easy for you to remember new words or grammar rules if you’re an English lover. |
| A.the importance of learning English |
| B.English in the modern world |
| C.how to write e-mails to other people |
| D.some advice on how to learn English |