假如你是李华，给在武汉的留学生朋友Jack写一封电子邮件，告知其目前新型冠状病毒肺炎COVID-19（Corona Virus Disease 2019）的形势，请他注意防护。
要点：1.告知疫情现状；
2.注意防护，如减少外出，带口罩，勤洗手等；
3.表达战胜疫情的信心。
注意：1.词数100左右（开头已经写好，不计入总词数）；
2.可适当增加细节，以使行文连贯。
Dear Jack,
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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（A），并在其下面写出该加的词。
删除：把多余的用斜线（\）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。
I’m glad to share some idea about garbage classification with you, which was a hot topic these days all over China. To my understand, we should do whatever we can support it. After all, the earth is home to everyone and it’s our duty to provide a health environment voluntarily. Garbage classification isn’t easy in the beginning, and it’s meaningful. By doing so, it will do many good to the recycling of valuable resources. For our environment and life, we are expecting to learn to sort the rubbish and make it as a habit. Every individual can make the difference and bring a bright future for our planet.
阅读下面短文、在空白处填人1个适当的单词或括号内单词的正确形式。
March 20 is the International Day of Happiness. Since 2013, the United Nations1.（celebrate）the International Day of Happiness as a way to recognize2.importance of happiness in the lives of people around the world. The United Nations invites each person of any age, plus every classroom, business and government to join 3.celebration of the International Day of Happiness.4.（interesting）enough, the United Nations even has a cartoon character to represent this day.
The theme of the International Day of Happiness is Happier Together,5.（focus）on what we have in common. On this day, thousands of people all around the world reach out to make a new positive6.（connect）with others. Many people design a calendar of events that might bring then happiness, after7.they post the calendar online and practice their different happy behaviors every day. This is only a handful of happiness that people intend themselves8.（follow）. However, it would encourage people to explore 9.（many） happy ways. If you want to be part of this special day,10.（join）the community as soon as possible.
Ciudad Perdida, Colombia’s “Lost City” is older than Machu Picchu. There are no trains or buses allowing of _______travels to reach its ruins. The remote place is only_______on foot: a tiring multi-day hike.
Despite this, I couldn’t_______the opportunity to visit Ciudad Perdida. 12 other hikers and I went there in_______with a licensed guide. The dirt path, which_______through towering palms and dangling vines（藤蔓）, proved_______right from the start. It’s recommended hikers have good physical_______, as the journey is difficult. Horses helped to carry basic_______like food to the cabins where we would sleep. Along the way we also met the_______. They have been left undisturbed for centuries and there’s a deep__________between them and the land.
The next morning, we were off early to__________the heat, but high temperatures and muscle pain had already__________by the time we reached the final stage-1,200 stone steps to__________.After finally lifting my__________body up the long flight of stairs, my eyes rested on the scene that had__________the hard journey: Ciudad Perdida.
I looked down and__________at the beautiful site below. We were among a handful of other groups visiting, which seemed like__________compared to other crowded tourist attractions. While the return trip included__________the mental hurdle（障碍）of having already accomplished our goal, the experience is the one I would do__________. It is the difficulty that makes the journey a more__________one. Earned views are always better.
1.A.long B.easy C.frequent D.endless
2.A.impressive B.dangerous C.worthwhile D.accessible
3.A.resist B.obtain C.promote D.grasp
4.A.harmony B.combination C.company D.communication
5.A.buried B.spread C.spun D.wound
6.A.disappointing B.embarrassing C.challenging D.amazing
7.A.character B.fitness C.independence D.confidence
8.A.equipment B.furniture C.possessions D.necessities
9.A.natives B.visitors C.guides D.drivers
10.A.difference B.distance C.bond D.belief
11.A.reduce B.avoid C.refuse D.abandon
12.A.watched out B.cut off C.set in D.gave in
13.A.cover B.catch C.construct D.explore
14.A.energetic B.painful C.unhealthy D.damaged
15.A.convinced B.predicted C.motivated D.surprised
16.A.aimed B.pointed C.viewed D.wondered
17.A.something B.nothing C.anything D.everything
18.A.overcoming B.memorizing C.observing D.fixing
19.A.otherwise B.instead C.though D.again
20.A.rewarding B.sensitive C.popular D.flexible
Competition is a common phenomenon in our social life.1.There is constant competition for academic degrees, jobs, customers, money and so forth. In a sense, competition is one of the motive forces to the development of society.
2.Therefore, the only way to survive is to be competitive. Growing in a competitive environment is important for a child because future adult life is difficult. Finding a good job, for example, is an extremely competitive activity.
Today, most people try to get good education through various ways.3.The quality of people is rapidly increasing. Competition is more violent than what we thought it should be. The potentially successful job applicant has to be prepared in stronger position by gaining more qualifications and experience. In the business world, to beat your competitors, you must be better than the other employees.4.
In fact, the only way our world rewards people is to give honor to the winners, not to the losers. By attempting to compete at different activities, we learn to win and lose, gain experience and know our strengths and weaknesses. Competition prepares us for the tough things in life.5.
A.Otherwise, you will be defeated.
B.Modern society demands high-quality talents.
C.Learning to be competitive is clearly the best preparation for the tough life.
D.There are also many people who have higher degrees in their special fields.
E.Children have to learn to be competitive in order to adapt to modern society.
F.In the natural world, the weak will be replaced by the strong and the fittest can live.
G.We compete when we play games and when we try to do better than others in our study.
The race to 5G is on. All four major US carriers now have some form of 5G wireless, although it’s all limited roll-outs in only a few cities, mostly using expensive phones that won’t support future nationwide 5G networks. We’re tracking the roll-outs monthly on our Race to 5G page.
The early 5G roll-outs are more like a public test than a final product. AT＆T, Verizon, and T-Mobile are all using technologies that only travel about 800 feet from a cell site, which means there isn’t much coverage. All four carriers are waiting for upgrades（升级）to their base stations that will improve coverage, speed, and reliability. Around the end of this year or the beginning of 2020, AT＆T, Verizon, and T-Mobile all intend to launch 5G networks that use the existing 4G spectrum（频谱）, which will have slower speeds but broader coverage.
We’ve tested AT＆T in Dallas and Las Vegas Sprint in Dallas and New York; Verizon in Chicago, New York, and Providence; and T-Mobile in New York. Every month, we’ve been seeing better performance and more new devices. It’s messy. It’s very early days. And if you like new technology, it’s very exciting.
In previous mobile transformations, we’ve seen most of the big changes happening years after the first announcement. Take 4G, for instance. The first 4G phones in the US appeared in 2010. But the sorts of 4G applications that changed our world didn’t appear until later. So following that plan. While we’re getting a little bit of 5G right now, you should expect the big 5G applications to crop up around 2021 or 2022.
5G stands for fifth-generation-cellular（蜂窝状的）wireless, and the initial standards of it were set at the end of 2017. But a set of standards doesn’t mean that all 5G will work the same-or that we even know what applications 5G will enable. There will be slow but responsive 5G, and fast 5G with limited coverage.
1.What is the present state of 5G in the US？
A.Initial exploration. B.Great improvement.
C.Wide application. D.Extensive promotion.
2.Why does the author take 4G for example？
A.To persuade carriers to give up 5G.
B.To remind people of 4G’s importance.
C.To prove 5G takes time to make a greater difference.
D.To show 5G has failed to meet expectations.
3.What’s the author’s attitude to 5G？
A.Cautious. B.Skeptical.
C.Opposed. D.Objective.
4.What’s the best title for the text？
A.Race to 5G B.5G is coming
C.How fast is 5G？ D.What is 5G？
