America is a mobile society. Friendships between Americans can be close and real, yet disappear soon if situations change. Neither side feels hurt by this. If the same two people meet again by chance, even years later, they pick up the friendship. This can be quite difficult for us Chinese to understand, because friendships between us develop more slowly but then may become lifelong feelings, extending(延伸)sometimes deeply into both families.

    Americans are ready to receive us foreigners at their homes, share their holidays, and their home life. They will enjoy welcoming us and be pleased if we accept their hospitality(好客)easily.

    Another difficult point for us Chinese to understand Americans is that although they treat us warmly, they don't show their politeness to us if it requires much time. But in China, we are usually generous with our time. Sometimes, we, as hosts, will appear at an airport even in the middle of the night to meet a friend. The Americans, however, express their welcome usually at homes, but truly can not manage the time to do a great deal with a visitor outside their daily plans. They will probably expect us to get ourselves from the airport to our own hotel by bus. And they expect that we will phone them from there. Once we arrive at their homes, the welcome will be full, warm and real. We will find ourselves treated hospitably.

    For the Americans, it is often considered more friendly to invite a friend to their homes than to go to restaurants, except for purely business matters. So accept their hospitality at home!

    Slowly but surely, we're moving closer and closer to 5G world. From smart-home security to self-driving cars, all the internet-connected devices in our life will be able to talk to each other at lightning-fast speeds with reduced delay. Objectively speaking, the fastest 4G download speeds in the US top out at an average of 19. 42 Mbps. But by comparison 5G promises gigabit (千兆)speeds.

    "5G is one of those heralds (使者), along with artificial intelligence, of this coming data age," said Steve Koenig, senior director of market research for the Consumer Technology Association. "The self-driving vehicle(车辆) is a great emblem of this data age, and that is to say, it is a sign of time, because with one single task, driving, you have massive amounts of data coming from the vehicle itself, and a variety of sensors(传感器) are collecting a lot of information to model its environment as it moves. It's pulling in data from other vehicles about road conditions down the lane(车道). It could be weather information, and also connected infrastructure (基础设施)construction. There's lots of data behind that task, which is why we need the high speed.

    And virtual reality glasses and headsets haven't yet broken the mainstream(主流), but tech companies are joyfully betting that these devices will eventually replace our smartphones. With 5G, that could actually happen. This is notable because companies such as Apple are reportedly developing AR glasses to assist—or even replace— smartphones.

    Ericsson stated at February's Mobile World Congress how smart glasses could become faster and lighter with a 5G connection, because instead of being weighed down with components, the glasses could rely on hardware for processing power.

But don't get too excited. There's still a lot of work to be done in the meantime, including various trials to make sure the radios play nicely with hardware and infrastructure construction so 5G isn't concentrated only in big cities.

    Chinese female scientist Tu Youyou won the 2015 Nobel Prize in medicine on October 5 for her discoveries concerning a novel treatment against Malaria(疟疾). This is the first Nobel Prize given to a Chinese scientist for work carried out within China.

    Tu shared the prize with Irish-born William Campbell and Satoshi Omura of Japan, who were honored for their revolutionary anti-roundworm treatment. 84-year-old Tu is awarded this prize for her contribution to cutting the death rate of malaria, reducing patients' suffering and promoting mankind's health. Although she received several medical awards in the past, the 2015 Nobel Prize is definitely the most privilege reward that recognizes Tu's dedication and perseverance in discovering artemisinin(青蒿素), the key drug that battles malaria-friendly parasites(寄生虫).

    However, her route to the honor has been anything but traditional. She won the Nobel Prize for medicine, but she doesn't have a medical degree or a PhD. In China, she is even being called the "three-noes" winner: no medical degree, no doctorate, and she's never worked overseas. No wonder her success has stirred China's national pride and helped promote confidence of native Chinese scientists.

    The fact that Tu has none of these three backgrounds reminds us that science should be more accessible to all. One shall be able to become a scientist no matter what kind of background he or she comes from, as long as one dives into scientific research. There have been discussions on people who really love science but are never able to achieve much during their whole life. Their contributions can never be ignored. They work so hard to prove the wrong way so that the future researchers will be closer to the right one.

    As the first Chinese mainland Nobel Prize Winner of natural science award, Tu's record-breaking winning also serves as a reminder to those who are too eager for instant success. Science is never about instant success. Tu spent decades on scientific research before its value is officially acknowledged. There is no way to measure how much one devotes to science and compare it with how much reward he or she may get.

    In American history, Benjamin Franklin was famous for his proverbs. Franklin lived in the 1700s. He was a leader of the American Revolution against English rule. He was also a scientist, inventor and writer.

    For many years, Franklin published a book called "Poor Richard's Almanac". He included many proverbs that he had heard or created. Like this one: "Early to bed and early to rise makes a man healthy, wealthy and wise."

    Franklin is also remembered for other proverbs like, "A penny saved is a penny earned."

    Here are other examples of proverbs that Americans use. Some people say, "All is fair in love and war." They mean that anything you do in a relationship or in battle is acceptable.

     In other words, when you are in love with someone, you may refuse to see anything bad about that person.

Some people are only interested in having a relationship with someone who is very good-looking. You might tell them that "Beauty is only skin deep." Your girlfriend may be lovely to look at, but she may also have some bad qualities. Your boyfriend is a wonderful person, but not good-looking. So what a person looks like is not really important.

    Another proverb is true in love and war or other situations: "Actions speak louder than words." It means that what you do is more important than what you say.

A. Or the opposite may be true.

B. The first ones are about love.

C. Some of them are still used today.

D. Another proverb says "Love is blind."

E. A proverb is a short, well known saying.

F. This means that money should not be wasted.

G. Another proverb about love is, "Absence makes the heart grow fonder."

    Frey is on her way to the Pottery(陶器)Workshop in Shanghai. She willingly 1the training courses of the workshop every Tuesday, spending three or four hours 2there.

    After five weeks of 3, she is looking forward to taking home the first bowl she makes with her own hands as a 4souvenir. "I've enjoyed every minute at the workshop. It enables me to make friends and learn how to make pottery with the directions and 5from others," Frey says. Also, she feels very comfortable in the workshop, which creates a 6atmosphere like classroom in which people from different backgrounds gather 7 to create their works. As a foreigner, Frey has adopted pottery making to 8 her own ideas and thoughts. "The whole process of making a pottery piece may look rather 9to a beginner, but I still keep on, and 10 I will leave with a whole case of my works by the end of our stay," Frey says.

    Sharing the same enthusiasm, Maggie Guo, a former clothes 11 and now a housewife is trying to complete her "pottery dream". "I 12 to study pottery when I applied to university many years ago, but I eventually get engaged in clothes design, which became my 13," Guo says. Now, after years in that field, she still 14 learning pottery. She attends the workshop to finally realize the 15 she had put on the shelf for so many years. "I am always surprised and 16 to see the final works of my own, and it 17 me to learn the real meaning of being an 18"

    They both think more people should 19 into the world of pottery making to experience the 20 of creativity with simple materials.

    Zhong Nanshan, an 83-year-old doctor became a household name 17 years ago for "daring to speak" in the fight SARS, is the public face of China's effort to control a new strain of coronavirus(冠状病毒).

    Despite his (advance) age, Zhong was appointed to lead the (investigate) into the new virus, which has rattled(使发狂)millions of Chinese who are traveling for the week-long Lunar New Year holiday. (he) announcement on Monday that the virus could spread between humans ratcheted up(增加) (worry) about the outbreak, which Beijing has warned officials of public shame if they cover up any infections(传染病).

    That marks a departure from 2003, in an atmosphere of fear and suspicion, Zhong, a respiratory(呼吸系统) diseases specialist(专家), gave media his candid(坦诚), pessimistic assessment of the severity of the SARS crisis.

    Zhong was hailed(称赞)for his integrity and (remain) a public figure ever since, (weight) in on public health issues such as air pollution and food safety.

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

    Last summer, I spend two weeks at a summer camp in England. Summer camps are high popular and a lot of teenager usually go camping every year. It was my first time, and I thought it was amazing. I stayed in a little wooden house with four another kids. We took part in lots of interested outdoor and social activities. I took my computer and camera to me, and sent photos back to my parents. At the camp I spoke English all time and I also practiced read signs. So my English is quite good now. I was sad to leaving the camp because of it was a really special holiday.

1）你遇到的情况；

2）你的认识和建议。

注意：

1）词数100左右；

2）可以适当增加细节，以使行文连贯。

Dear editor,