题型：阅读理解 题类：常考题 难易度：普通
黑龙江省齐齐哈尔市重点中学2020-2021学年高二下学期英语6月月考
Round and Round They Go
Space is becoming more crowded. On December 3, a Falcon 9 rocket made by SpaceX thundered into the sky. On board were 64 small satellites, more than any American company had launched before in one go. They have a variety of uses, from space-based- radar to the monitoring of radio-frequency- emissions.
These objects are part of the latest breed of low-Earth-orbit (LEO) satellites. This launch is just taste of what is planned. SpaceX and OneWeb, a communications firm, plan to launch satellites in their thousands, not hundreds. The pair are set to double the total number of satellites in orbit by 2027.
That promises to change things dramatically on Earth. LEO satellites can bring internet connectivity to places where it is still unavailable or unaffordable. This will also be a lasting source of new demand for the space economy. Morgan Stanley, a bank, projects that the space industry will grow from $350 billion in 2016 to more than $1. I trillion by 2040. New internet satellites will account for a half this increase.
For that to happen, however, three worries must be overcome. Debris(碎片)is the most familiar concern. As long ago as 1978, Donald Kessler, a scientist at NASA, proposed situation in which, when enough satellites were packed into low-Earth orbits, any collision could cause a chain reaction which would eventually destroy all space craft in its orbital plane(平面). The syndrome which bears Mr. Kessler's name weighs heavily on the minds of executives at the new satellite firms. Debris could cause entire tracts(广阔的一片) of space to be unusable for decades.
Solutions exist. One is to grab malfunction satellites and pull them down into Earth's atmosphere. Another is to monitor space more intensively for debris; a US Air Force programme called Space Fence is due to start in 2019. But technology is only part of the answer. Rules are needed to govern the safe disposal(清除) of old satellites from low-Earth orbit. The United States' Federal Communications Commission is revising its regulations with this in mind. Other countries should follow suit.
Cyber-security is a second, long-standing worry. Hackers could take control of a satellite and seal intellectual property, redirect data flows or cause a collision. The satellite industry has been slow to respond to such concerns. But as more of the world's population comes to rely on the infrastructure of space for access to the internet, the need for action intensifies.
The third issue follows from the first two. If a simple mistake or a cyber-attack can cause a chain reaction which wipes out hundreds of billions of dollars of investment, who is liable? Underwriters(保险商) are studying the plans of firms that wish to operate large numbers of satellites. But there is a long way to go before the risks are well understood, let alone priced.
As space becomes more commercialized mind-bending prospects open up: packages moved across the planet in minutes by rocket rather than by plane, equipment sent to other small planets, passengers launched into orbit and beyond. All that and more may come, one day. But such activities would raise the same questions as LEO satellites do. They must be answered before the space economy can truly develop.
Taking good notes is a time-saving skill that will help you to become a better student in several ways. {#blank#}1{#/blank#} Second, your notes are excellent materials to refer to when you are studying for a test. Third, note-taking offers variety to your study time and helps you to hold your interest.
You will want to take notes during classroom discussions and while reading a textbook or doing research for a report. {#blank#}2{#/blank#} Whenever or however you take notes, keep in mind that note-taking is a selective process. {#blank#}3{#/blank#}
The following methods may work best for you.
●Read the text quickly to find the main facts and ideas in it.
●Carefully read the text and watch for words that can show main points and supporting facts.
●Write your notes in your own words.
●{#blank#}4{#/blank#}
●Note any questions or ideas you may have about what was said or written.
As you take notes, you may want to use your own shorthand(速记). When you do, be sure that you understand your symbols and that you use them all the time. {#blank#}5{#/blank#}
A. Use words, not complete sentences. B. There are three practical note-taking methods. C. You must write your notes on separate paper. D. Otherwise, you may not be able to read your notes later. E. You will also want to develop your own method for taking notes. F. That means you must first decide what is important enough to include in your notes. G. First, the simple act of writing something down makes it easier for you to understand and remember it. |
Latrice Brown was excited about starting her junior year. She had volunteered to take part in the Lincoln High School Friendship Program. As an upperclassman, she would be assigned a “freshman(新生) friend”. Her duties would include helping her friend get used to high school life by offering friendship. Latrice thought it was important to have someone with whom to talk and share concerns. She knew that the friendship program was likely to make the freshman year of high school a positive experience. On August 2nd Latrice received a notice in the mail about the schedule of events for the freshman orientation (适应指导).
Freshman Orientation
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TO: Latrice Brown FROM: Mrs. Gomez, Guidance Counselor, 555-7295 DATE: August 1st SUBJECT: Freshman Friendship Program FRESHMAN FRIEND: Susan Brooks , 555-2168 |
Please call your freshman friend and introduce yourself over the telephone.
Confirm that he or she will be attending the orientation.
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SCHEDULE OF EVENTS FOR ORIENTATION Wednesday, August 13—9:30 A.M. to 1:00 P.M 9:30 A.M. to 10:30 A. M Upperclassmen and freshmen will gather for a gathering in the hall. Student Council president Sarah Wilke will give a speech titled “What It Means to Be in High School”. Mr. Reick, the principal, will welcome everyone to Lincoln High School and formally introduce each upperclassman to his or her freshman friend. After being introduced, please go to the café. At this time pick up your friend's class schedule and locker number at the guidance counselors' (顾问) table. 10:30 A.M to 11:30 A. M Start your school tour at your friend's locker to ensure it works. If there is a problem, report it to Mr. Mulholland, the assistant principal. Then walk to the classrooms on the class schedule in the order in which they are listed. This will help familiarize your freshman friend with the schedule and the layout(布局) of the school. Discuss high school life but try not to supply your freshman friend with too much information. High school is confusing and frightening when you're just starting and everything is new. 11:30A.M to 1: 30 P.M Return to the café to enjoy pizza and to take part in a question-and-answer meeting. Monday, August 18 ( The First Day of School)—All Lunch Periods Meet your freshman friend in the café during lunch and discuss the morning of the first day. After lunch take your friend to the courtyard between the gym and the art rooms. Each club will have a table set up with information about its activities after class and a sign-up sheet for students who wish to join. Club officers will be available to answer questions and to encourage freshmen to take part. |
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