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。

    My classmates and I went to the Beijing Exhibition Hall to see the exhibition on China's achievements in last Saturday.

    The exhibition attracted thousand of people all over the country, so we had to wait for a long time to get in. Luckily, we met a docent(讲解员) who gave us a introduction of the development during these years. We listened attentive and were deeply impressed by the brilliant success of our County. When we step into the Hi-tech display section, our eyes were caught by the high-speed train model "Fuxing". We were so amazing at it that we couldn't help take pictures all the time. After leaving, with the words "Chinese Dream" as a setting, we had a group photo to record the great moment.

    The visit to the exhibition gives me greater faith in Chinese dream, that our personal dreams are closely related to.

A month ago, I broke a nail. My other nails looted amazing, but now one was a mess. Clearly, there was no point in keeping the others, so I took out the nail scissors to cut them all off.

"What are you doing, Mom?" my daughter cried. "Your nails look great! Don't cut them!"

"But they're ruined, "I said, waving the broken one in her face.

"They're not ruined," she said. "You still have nine nails left!"

I hesitated, with the scissors still in my hand. My nails certainly weren't perfect anymore, and the opposite of "perfect" is "ruined", right? I mean, this is how I think about most things: it's all or nothing. Take my finances for example.

I can spend weeks being sensible and buying only essential items, such as food for my family. And then one day, PH see something expensive that 1 really like and buy it. Then, I think to myself "Well, I already spent $100 on that dress last week, so I may as well spend $50 on this lipstick (口红)" and give up saving entirely. I've thought about why I act this way, but I don't know what causes this behavior. I seem to go from "good" to "complete disaster" in a matter of moments. My brain only sees "perfection" or "disaster", which is extremely unhelpful.

We humans are never just good or bad—we are far more complex. We have wins and we have losses and, occasionally, they are hard to tell apart. Some people understand this instinctively(本能的), while others struggle. For most of us, learning not to do the thing we're used to requires effort and discomfort. However, we should remind ourselves that we sometimes make mistakes, and that this doesn't mean we've failed. We need to accept that things will sometimes go wrong.

Indeed, failure is part of life. We ail fall occasionally, and we normally get things straight back up. And so, with my daughters words ringing in my ears, I decided to keep my nine nice nails. I feel annoyed every time I look at my hands, but I'm determined to live with my choice. It's a perfect exercise in imperfection. Maybe soon, I'll switch off my computer the next time I feel like I might buy something else I don't need, although I may need my daughter there to guide me again.

Dogs can smell things at concentrations of one part in a trillion—equal to a single drop in a pond the size of 20 Olympic swimming pools. That ability is put to good use by human beings. Trained dogs can sniff out explosives and drugs, even tracking missing people. They can also detect (发现) illnesses, including cancer, malaria, Parkinson's disease and COVID-19, before obvious symptoms appear. A study published in 2019,for example, suggested that trained dogs detect (发现) illnesses, including cancer, malaria, Parkinson's disease and COVID-19, before obvious symptoms appear. A study published in 2019, for example, suggested that trained dogs were able, 97% of the time, to identify blood samples taken from patients with lung cancer.

Training dogs, however, takes time. Trainers must be paid. The animals themselves get tired and bored. Dogs are not, then, a practical answer to the question of how to detect illness quickly. But fruit flies might be. Unlike dogs, they are cheap and disposable--and their senses are just as good. Along with technology tailored to their talents, they could provide economical and easy ways of detecting cancer, and also offer an alternative to laboratory tests for COVID that might be welcome in countries with limited budgets.

Giovanni Galizia is one leading researcher of the University of Konstanz, in Germany. Fruit flies smell things using their feelers, and Dr Galizia has genetically modified  (改变) his flies. When the flies get the smell of the cells with illness, a change in their brain activity can be seen under a microscope. With the help of machine learning, Dr Galizia can recognize the patterns to detect illness.

Whether this idea will come to fruition remains to be seen. Medical regulators will have to be convinced that what may seem wacky at first glance is actually practical. But doctors have been encouraged to use animals' noses to assist diagnosis (诊断) since ancient times. Having a little assistance from fruit flies might be no bad thing.

    Young people  (bear) in 1995 or later have another name in English — Generation Z.

    Now entering adulthood and soon to join the workforce, Generation Z grew up in a special period of time when technology developed fast and the Internet became  (universe).

    It  (believe) that Generation Z is the generation that is going to shape our future,  is why policy makers are trying  (they) best to understand these young people. Most people agree that the biggest difference between Generation Z and other generations is how connected they are. This is a group of people who have been familiar  social media as soon as they came to the world. It may be true that Generation Z-ers have a shorter attention span（持续时间） a goldfish does, but since they grew up among social changes, they are more active in  (political).

    Generation Z-ers are also culture creators.  (grow) up with the Internet has freed this generation from traditional cultural expression. These young people never  (willing) let their creativity be limited by their parents or traditional rules.

    Do you know the term "tweenager"? It's a slang word being used in the UK to describe children 10-13 years old. They are between junior and the teenage years. Why are they suddenly referred to in this way?

    Tweenagers now have more money, freedom and influence upon their parents than they've ever had before. More and more companies are creating products and services for tweenagers. You can get everything from branded lunchboxes and mobile phone covers, to monthly fan magazines and clothing-it's all about sales.

    Most children in the UK today get more pocket money than kids did a decade ago. It is because parents are having fewer children on average than in the past. In addition, the divorce rate in the UK is continually rising and parents spend less time with their children than they used to. So, many parents try to compensate(补偿) by buying presents for them.

    And do tweenagers have more freedom? Well, UK children today are very familiar with media and computer. Many have a television, if not a computer, in their bedrooms. They have access to much more information about the world.

    They may have experienced a lot in life as well, since 24% of UK kids live in single-parent families. People now say that "Kids are getting older younger". With such sophistication (世故) at such a young age, they are much more fashion conscious and concerned about their image.

    In a world of TV programs that promise overnight success and fame at a young age, some people think it's extremely important to look fashionable. Surely none of the above is a good thing, is it? Can it really be healthy for us to encourage kids to be like adults at such a young age? Are we stealing childhoods in return for profit?

    The UK government is certainly concerned, and for that reason has strict laws preventing companies from marketing their products and services at children. So, is there a happy ending to this story?

    Companies have just worked out that the older tweenage audience is now looking for something darker and more rebellious. As a result, films such as Twilight are being produced for this older tweenage audience.

    My twin sister and I have always been homeschooled, rather than sent to school. And it's wonderful and has changed me greatly. I can't imagine what my1would have been like if I wasn't.

    When I was younger, we mostly2from my parents and textbooks, but now we do most work on the computer,3my parents still help us when we feel4about what we learn. There's a large community of homeschoolers in my town, and they have frequent5so that we can talk and play together happily and become more6.

    In addition, we have a homeschool "co-op(合作社)" where some of the moms serve as7 teachers. We're 8 by age rather than grade, but we get appreciation for everything we do for others there and it9well for me. Right now I'm taking10writing, a course in which I can learn to express new ideas perfectly! We also learn production, which is taught by my11. My best friends go there too, so we have fun learning together.

    Some of the most interesting things I learn come from12with my mom and dad. They are both very13people and we have long talks about history, politics, literature，just to14a few. My sister is more naughty and15trouble a lot more often than I do. We fight and quarrel sometimes, but things have been better with us16, because we have been trying really hard to improve our17 and become more considerate.

    I think homeschool has18me well. I have a bigger vocabulary and become more intelligent.19, I get better grades. I can socialize, too. I'm sort of well known, even if not the most20girl. That's just fine with me.

    I was on a plane returning home to Dallas, Texas after completing my duty in Vietnam. There were no hometown parades for us veterans （退役老兵） from that1war and I had been warned about the unfriendliness from our countrymen at that time.2, I was just trying to get home without incident.

    I sat, in uniform, in a window seat,3eye contact with my fellow passengers. No one was sitting in the seat next to me, which4my loneliness. A little girl, not more than 10 years old, suddenly5 in the passage. She smiled and, without a word,6handed me a magazine. I accepted her7together with her quiet “welcome home”. I turned to the window and wept. Her small8of caring was the first I had9 in a long time.

    I believe in the10between strangers when we reach out to one another.

    Today, that young girl 11 has no memory of what happened years ago. I like to think of her as having grown up, continuing to12others and teaching her children to do the same. I know she might have been told to give me the “13” by her parents. It doesn't matter why she gave me the magazine. The 14thing is she did.

    From then on, I have followed her15 and tried, in different ways for 16people, to do the same for them. I know that my 17since then are all due to that little girl. Her offer of a magazine to a tired, scared and 18soldier has echoed throughout my 19. I have to believe that my small gestures have the same20 on others.

    A lady, who found it not easy to wake up early, bought an alarm clock. These clocks are so made as (strike) with a loud noise at any hour the owner pleases to set them. The alarm clock (perfect) did its duty, and went off at the right time. She (rise) at once, and felt better all day for it. , after a time, the lady grew tired of early rising. When she (wake) up by the noise, she merely turned over in bed and slept again. In a few days, the clock spoke just as loudly as ever, but she didn't hear because she had been in the habit of not obeying it, (find) that she might as well be without it, she was determined that when she heard the sound she would jump up.

    So it is conscience. If we will obey its voice, even in the smallest things, we can always hear it, clear and strong. But if we allow ourselves to do we fear or may not be right, we shall grow more and more (sleep) until the voice of conscience has no longer the power to wake us.