In ancient times, our ancestors relied on stars to guide them
The BDS is one of four global navigation
As the
2 . At some point when you were a child,a trusted adult likely told you that if you held a seashell up to your ear, you'd hear the ocean.
But what exactly is that rushing sound you're hearing?
A.The same goes for shells. |
B.The answer is less mystical. |
C.This effect is not limited to shells. |
D.Now you probably know that this is not true. |
E.Scientists are working hard to find the answer. |
F.Maybe the original myth is not completely false. |
G.There's another explanation for the rushing sound in a seashell. |
![](https://img.xkw.com/dksih/QBM/2020/8/23/2533850029867008/2533989728780289/STEM/e162c9760b0643369149a13477d9afbf.png?resizew=529)
1. Being afraid of snakes, she always
2. I would like to thank Mr Smith
3. In recent years, the winter temperature in this region tends to
4.
5. Many scientists believe that global warming has
I dream to be
All in all,I will learn harder to get more knowledge so as to lay a good foundation for my future. I will make full use of my every second and make my dream come true. I believe I can
删除:把多余的词用斜线(\)划掉。
增加:在缺词处加一个漏字符号(∧),并在该词下面写出该加的词。
修改:在错的词下划一横线,在该词下面写出修改后的词。
注意:1. 每处错误及修改均仅限一词。
2. 只允许修改10处,多者(从11处起)不计分。
Dear Helen,
Thank you so much for your party at Christmas Eve. All of them enjoyed it very much. We liked the dishes you had cooked but we were happy to learn the English songs you taught us. We hope you’ll teach us a lot much songs in the future. We’re leaving from our hometowns to spend the winter vacations. It seemed that many of us are homesick after being away from home for such a long time. What are your plans? Will you join in the tourist group organized by our school? We are busy prepare for our trips. Please excuse us for not able to say goodbye to you. We hope you’ll have a good time.
Yours,
Xiao Hua
It was a sunny day. A little boy’s father was sitting on the couch, drinking a beer while watching
“Okay, Daddy,” said the boy, running out of the room. Five minutes later, the boy returned,
By this time, the father had opened another cold beer and another match was beginning. Impatient
A few minutes later, the boy
“
8 . When it comes to helping developing countries, we often think about offering money in order that they can build schools and hospitals, buy food and medicine, or find clean water supplies. These seem to be the most important basic needs in their lives. However, it's far from enough. We have to come up with better ideas.
A man called Nicholas Negroponte invented a cheap laptop computer, which he decided to invent after he visited a school in Cambodia. The laptop which Mr. Negroponte has designed is not the same as the normal one that you can buy in the shops. One difference is that it will be covered in rubber so that it is strong and won't be damaged easily. As an electricity supply can be a problem in developing countries, the computer also has a special handle in order that children can wind the computer up to give it extra power just as easy as setting a clock.
This special laptop computer will cost less than 100 US dollars and Mr. Negroponte wants to produce as many as 15 million laptop computers in the first year. The idea is that these computers will help the children’s education as they will be able to access the Internet. These computers might not benefit the people in developing countries immediately, but by improving children’s education they should help people to find their own solutions to their problems in the long term.
Another idea to help children in developing countries is to recycle old mobile phones so that they can be used again in the UK and probably in many other countries too, millions of mobile phones are thrown away every year. The waste crested by throwing away these old phones is very bad for the environment, so it seems to be an excellent idea to achieve two important goals at the same time. We will reduce the waste we produce and help others, in other words, we will be able to “kill two birds with one stone” and that is always a good thing.
1. The underlined phrase “wind up” in paragraph 2 means .A.吹风 | B.给……上紧发条 | C.拆开 | D.带走 |
A.will be damaged much easier than the normal one |
B.has a special handle to access the Internet |
C.is cheap and can run with extra power |
D.can be helpful to find the people’s own solutions |
A.illustrate the kindness of people in the developed countries |
B.tell us what high technology can help people |
C.show how to find business opportunities in developing countries |
D.give an example of how to help developing countries |
A.We need to think about more ways to help people in developing countries,not just throw money at the problem. |
B.We should spend much money helping people in developing countries build more schools and hospitals. |
C.We should think about giving help to developing countries by giving them all we have. |
D.We should help the people in developing countries by improving children's education immediately. |
9 . Do you want to live another 100 years or more? Some experts say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the human life span.
“I think we are knocking at the door of immortality(永生),” said Michael Zey, a Montclair State University business professor and author of two books on the future. “I think by 2075 we will see it and that’s a conservative estimate(保守的估计).”
At the conference in San Francisco, Donald Louria, a professor at New Jersey Medical School in Newark said advances in using genes as well as nanotechnology(纳米技术) make it likely that humans will live in the future beyond what was possible in the past. “There is a great effort so that people can live from 120 to 180 years,” he said. “Some have suggested that there is no limit and that people could live to 200 or 300 or 500 years.”
However, many scientists who specialize in aging are doubtful about it and say the human body is just not designed to last past about 120 years. Even with healthier lifestyles and less disease, they say failure of the brain and organs will finally lead all humans to death.
Scientists also differ on what kind of life the super aged might live. “It remains to be seen if you pass 120, you know; could you be healthy enough to have good quality of life?” said Leonard Poon, director of the University of Georgia Gerontology Centre. “At present people who could get to that point are not in good health at all.”
1. By saying“we are knocking at the door of immortality”,Michael Zey means_________.A.they have got some ideas about living forever |
B.they believe that there is no limit of living |
C.they are able to make people live past the present life span |
D.they are sure to find the truth about long living |
A.the human body is designed to last past about 120 years |
B.it is possible for humans to live longer in the future |
C.it is still doubtful how long humans can live |
D.people can live from 120 to 180 |
A.a great effort |
B.the conservative estimate |
C.the idea of living from 200 to 300 years |
D.the idea of living beyond the present life span |
A.No Limit for Human Life |
B.Living Longer or not |
C.Science,Technology and Long Living |
D.Healthy Lifestyle and Long Living |
1. 捐给自己的学校,建一座图书馆;
2. 送弟弟出国深造。
注意:1. 100词左右;2. 适当发挥,使文章连贯。