All networks like 3G and 4G will be things of the past, because 5G will be reachable in the near future. So, what’s so special about a 5G future? First, its download speed can be as fast as 20GB/s, which is 100 to 200 times that of 4G. But what’s more impressive is 5G’s low delay rate. Now 4G takes 200 milliseconds to send and receive information. But 5G will get it down to 1 millisecond.
5G is going to change the way equipment connects to the Internet. And self-driving cars may be one of the biggest breakthroughs to come out of 5G. The self-driving car under 5G network could react to hundreds of cars around it within 1 millisecond. It’ll prevent car accidents and end traffic jams completely.
5G can benefit us in other ways. Operations could be performed by robots controlled by experts from the other side of the world. Factories can be staffed by robots that can communicate their tasks to each other, and they can do more work over a 5G network. Imagine a group of drones(无人机) flying over a field of crops. Then farmers won’t have to work so hard anymore.
But, 5G is not perfect. One major shortcoming has to do with why it’s so fast. 5G uses the millimeter waves, while 4G uses the 15 to 40 centimeter-long waves. And shorter waves go fast but not very far. On 4G networks, the signal can go 10 kilometers. But the 5G signal can go at most 300 meters, and it can’t even go through walls or rain.
1.How does the author show us 5G’s advantages in Paragraph I?
A.By giving examples of the uses of 5G.
B.By making comparisons between 4G and 5G.
C.By explaining the scientific principles of 5G.
D.By analyzing 5G’s development from 4G.
2.According to the author, the self-driving cars will ___________.
A.cause more car accidents.
B.slow down 5G’s development.
C.run without being connected to the Internet.
D.have a much faster reaction speed than humans.
3.What does the underlined part “ be staffed by robots” in paragraph 3 mean?
A.Be built by robots.
B.Have robots as workers.
C.Offer employees home robots.
D.Produce more medical robots.
4.What does the last paragraph mainly talk about?
A.The main weakness of 5G networks.
B.How to make 4G networks more perfect.
C.The types of long waves and short waves.
D.How to improve the communication in rainy days.
Alexander Fleming was born in Scotland in 1881 and his parents were both farmers. He moved to London in 1895 and finished his basic education. Fleming entered the medical field in 1901, studying at St. Mary’s Hospital Medical School. While at St. Mary’s, he won the 1908 gold medal as top medical student.
A position at St. Mary’s Hospital led him to the then-new field of bacteriology(细菌学). During World War I, Fleming served in the Royal Army Medical Corps. At the time, antiseptics(抗菌剂) were commonly used. Fleming discovered that their destructive effects on the body were greater than their ability to break down harmful bacteria. Therefore, more soldiers were dying from antiseptic treatment(治疗) than from bacterial harm.
Fleming suggested that, for more effective treatment, wounds simply be kept dry and clean. However, his idea largely got ignored because of the difficult conditions. Returning to St. Mary’s after the war, in 1918, Fleming worked as the assistant director of St. Mary’s.
In September 1928, Fleming returned to his lab after a month away with his family, and was surprised to notice that a type of bacteria he had left out had become polluted by a mold(霉菌). The bacteria surrounding this mold had been destroyed. He realized that he discovered the world’s first bacteria killer. It was later named “penicillin”.
Further development of penicillin was not a one-man operation, so Fleming employed two young researchers. Penicillin finally came into use during World War II and Fleming won the Nobel Prize in 1945.
1.What do we know about Fleming?
A.He began to study medicine at the age of 14.
B.He completed his basic education in Scotland.
C.He had excellent performance while in college.
D.He started his career due to his parents’ influence.
2.What did Fleming find during World War I?
A.The British army suffered from a lack of antiseptics.
B.Few people wanted to study the field of bacteriology.
C.Soldiers had limited knowledge of treating their wounds.
D.Antiseptics did more harm than good to wounded soldiers.
3.What does Paragraph 4 imply?
A.Fleming discovered penicillin quite by accident.
B.Penicillin was Fleming’s first well-known discovery.
C.Penicillin was later put into use by Fleming’s students.
D.Fleming made a mistake while preparing for an operation.
4.How does the author organize the text?
A.By providing data. B.By giving examples.
C.By making comparisons. D.By following time order.
Do you want to join a club in our school? Here are some clubs that you might be interested in.
Chinese Culture Club
The Chinese Culture Club focuses on exploring Chinese culture. You don’t have to speak the Chinese language; you’re just required to have a true interest in the Chinese way of life. The club regularly explores Chinese culture through traditional Chinese food, movies, and celebrations. Contact Ms Huang if you would like to learn more. Meet every Thursday after lunch in Room 805.
Chess club
Come out and join the Chess Club! We will meet to explore chess theory and strategy. We will also test our new knowledge through competitive games. Whether you are a beginner or an experienced one, players of all levels are welcome! Meet on Wednesdays from 3:00 pm－4:30 pm, in Room 701 with Mr Longino.
Science Club
We’ll be doing experiments and prepare ourselves for the annual Science Olympiad. All the students are welcome! Members of science Club meet on Thursdays from 3:00－4:00 in Room 702, with Mr Underriner.
Robotics Club
The club aims at providing the students with an opportunity to design their own robot, in order to compete in the NYC FIRST Tech Challenge Competition in the late fall and winter.
Also, if you are a parent willing to help with expertise(专业知识), feel free to contact Mr. Irimina. Meet on Fridays in Room 103 from 3:00pm－4:55 pm.
Chorus (合唱队)
The Chorus is an opportunity for students to sharpen their vocal(发声的) skills and overcome stage fright. Students will sing songs, but our focus is soul, R&B, and rock. All chorus members are expected to participate in the school musicals as well as other shows. Meet after school on Thursdays with Mr Copeland in Room 602.
1.What is a requirement if you want to join Chinese Culture Club?
A.Being able to speak Chinese.
B.Knowing well about Chinese culture.
C.Knowing the ways to cook Chinese food.
D.Being interested in the Chinese way of life.
2.What can we learn about Chess Club?
A.It doesn’t offer students chances to join competitive games.
B.It doesn’t accept students without basic knowledge of chess.
C.It improves students’ chess theory and ability to play chess.
D.It opens to students for two hours a week.
3.Why was Robotics Club created?
A.To help students design robots for a competition.
B.To inspire parents to take part in their children’s activities.
C.To organize the FIRST Tech Challenge Competition in NYC.
D.To raise money for scientific research done by the schools in NYC.
假定你是李华。你了解到教育部出台规定，严禁中小学生将个人手机、平板电脑等电子产品带入课堂。请用英语给你的英国朋友Peter写封信，发表你对这一规定的感想，并询问对方国家的学生使用手机情况。
注意：1. 词数100左右；
2. 可以适当加入细节，以使行文连；
3. 开头和结尾已给出，但不计入总词数。
Dear Peter,
Recently, the education authorities in China introduced a regulation that would ban primary and middle school students from bringing electronic devices into classrooms without permission.
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(\)划掉。
修改：在错的词下划一横线,并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Dear Peter,
Good news travels fast! I am glad to hear that you were admitted Yale University. Please accept my sincerely congratulations on your success.
I knew how hard you have been working for these years but, I am very proud of you for your success. I am sure that it is just my persistence and hard work which, leads to your current success. Just as the old saying go, “ No pains, no gains". I strongly believe that you will make a greater progress in your future studies and works.
At the end of my letter, I put my best wishes for you! And I look forward to see you before long.
Yours,
Lily
阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。将答案填写在答题卡的相应位置。
What is a classic? It can 1.(put) in the following way: When you reread a classic, you do not see more in the book than you did before: you see more in you than you did before.
A classic is a book that gives you wonderful feelings, and enables you to uncover part of the 2. (mean) of life. A classic is a book that has stood the test of time, 3. book that men and women all over the world want to keep all their lives. Not many books can stand such a test 4. (consider) all the books that have been produced, classics account for only a very small share of the total-less than 0. 001 percent. That is just a few thousand books. Under 100 5.those make up the solid core (核心).
You may ask 6. we should read the classics? I suggest three reasons: a classic opens your mind, helps you grow and helps you understand your life, your world, yourself. A classic can give you insights into yourself. 7. (certain), you can get pleasure out of almost any book. But a classic, once you go deep into it, 8. (lift) you up high! When you read classics, you'll find yourself 9. (inspire) by the thoughts and observations of the most gifted 10. (writer) in history.
