During the winter vacation,I was involved in an image-processing project. My task was to extract（提取）the shape of every cell from a(n)__ of microscope images. It seemed quite straightforward at first,but it turned out to be __.
Since I did not have any experience in image processing,I studied some basic ___on my own and started to use a very popular function library(函数库）called OpenCV. As the time was __,I just learnt to apply techniques without going into the mathematical rationale(原理）。As a result,I didn't complete the task in an efficient way and____lots of time.
Through this project,I got a good __ of the importance of studying the basic knowledge. I will probably ___to spend more time studying the theory before I ___another project. By learning their underlying mechanisms(机制），I will be able to ___the tools to suit my own needs. In this way,1 may achieve___ results.
Another challenge I met was about the brightness setting. When I sketched(勾勒）the __ of the cell by the computer,I first set the brightness value to 50,___that the computer could delete the dark places and extract the shape of the cell___. But it turned out that the standard didn't fit for every image. So 1____the brightness value to 30,but that didn't __ either. It was very hard to find a value that worked for all ____
From this,I began to appreciate human eyes. Our eyes ___the amount of light entering them automatically through a feedback system to achieve the best image representation,but computers are not that __. There is still so much that we don't know about the human body.
In summary,I think it is good for students to be involved in real projects___ they can begin to learn about various fundamental ___and get themselves ready for the future.
1.A.collection B.addiction C.measurement D.accumulation
2.A.simple B.dangerous C.skeptical D.challenging
3.A.items B.techniques C.concepts D.contents
4.A.limited B.previous C.permanent D.equal
5.A.saved B.postponed C.appreciated D.wasted
6.A.use B.sense C.knowledge D.belief
7.A.enjoy B.decline C.choose D.demand
8.A.turn down B.set about C.put forward D.make out
9.A.evaluate B.settle C.dispose D.handle
10.A.better B.quicker C.easier D.closer
11.A.character B.figure C.movement D.outline
12.A.declaring B.requiring C.hoping D.recommending
13.A.automatically B.willingly C.deliberately D.rapidly
14.A.attached B.applied C.changed D.appealed
15.A.work B.solve C.achieve D.gain
16.A.results B.images C.places D.theories
17.A.absorb B.accept C.adjust D.delete
18.A.accessible B.ambitious C.fashionable D.intelligent
19.A.when B.because C.although D.unless
20.A.conclusions B.functions C.systems D.principles
难度: 困难查看答案及解析
London is a real treat for museum lovers and museums are a popular destination among London’s many attractions. Below is a list of London’s top museums.
◆ The London Transport Museum
This is a great, child-friendly museum which combines education with activities. Housed in huge iron and glass structure, the museum possesses a wonderful and colorful collection of more than 80 vehicles spanning 200 years of London’s history, including a red Routemaster bus and the world’s first Underground steam train. There are some great posters and artworks too! Tickets from ￡16.
◆ The Science Museum
From the future of space travel to asking that difficult question: “Who am I?”, the Science Museum makes your brain perform Olympic-standard mental gymnastics. See, touch and experience the major scientific advances of the last 300 years; and don’t forget the awesome IMAX cinema. Free entry.
◆ The Natural History Museum
As well as the permanent (and permanently fascinating!) dinosaur exhibition, the Natural History Museum boasts a collection of the biggest, tallest and rarest animals in the world.See a life-sized blue whale, a 40-million-year-old spider, and the beautiful Central Hall. Free entry.
◆ The Museum of London
The Museum of London is one the world’s largest urban museum, packed with historic objects and exhibitions telling the story of London’s past. Discover prehistoric London, the city under Roman rule, and the grandeur of medieval London. Don’t miss the new Galleries of Modern London, from 1666 to the present. Free entry.
1.What does London Transport museum look like?
A.An old castle. B.An old church.
C.A modern building. D.A big cottage.
2.Which museum will you visit if you are interested in the history of London?
A.The London Transport Museum B.The Science Museum
C.The Natural History Museum D.The Museum of London
3.What does the Science Museum offer kids?
A.Chances to make films. B.Hands-on experience.
C.Some Olympic events. D.Great posters and artworks.
难度: 中等查看答案及解析
I always had the preference to take on more than I should when I was young. At times, I wanted to prove to myself that I could handle it. At other times, my purpose was to please someone and gain recognition for my efforts. Sometimes this led to stress or frustration.
When I was an IT manager after college graduation I was assigned to work with a wealthy customer and be a go-between (中间人)for my company. I took on the assignment happily, thinking that this might be my time to shine. However, the customer’s demands proved to be more than I could do with. And the company chose to stand by the customer and try to meet his unreasonable requirements rather than stick to what we had originally offered in the contract. As you can imagine, this led to a lot of unexpected problems and arguing with some of the staff who refused to do anything outside their scope (范围) of work. I remember walking into my office one morning, opening my laptop and staring at the blank screen for long, thinking to myself: What should I do? That was a difficult time in my life and then I finally had to give up my first job and left that company sadly.
Perhaps, I thought then, I could find the job that didn’t involve dealing with difficult people and difficult situations. But later I realized: Is this possible in our modern world? No, it is impossible. Now, I know, I shouldn’t run away from the challenges I faced in life: I had to learn how to deal with them. I regret not persevering ( 坚 持 ) in my job. We should train ourselves to look at things from a positive point of view, because that is far better than being trapped in the bad circle depression. I’ve come to see that when faced with difficulties, I should not give up, but persevere.
1.Why did the author take the work assigned to him happily?
A.He wanted to please the boss.
B.The work was very easy for him to do.
C.He failed to find a job many times before.
D.He thought it was time to prove his ability.
2.What does the underlined word “this” in the second paragraph mean?
A.Arguing with some of the staff.
B.Meeting the customer’s unreasonable requirements.
C.Accepting the assignment without hesitation.
D.Sticking to what had been originally offered in the contract.
3.What made the author leave his first job?
A.The depressing job situation. B.The low payment.
C.His lack of ability. D.A better job waiting for him.
4.What’s the best title of the text?
A.Running away from challenges. B.Persevering instead of giving up.
C.Refusing to argue with customers. D.Leaning to take on more than one can.
难度: 中等查看答案及解析
Not long ago, few little girls imagined they could grow up to become astronauts. For years in the United States, only men had that opportunity. In 1983, that changed. Sally Ride made history by becoming the first American woman to travel to space.
On Monday, Ride died at the age of 61, “Sally was a national hero and a powerful role model,” President Barack Obama said in a statement. “She inspired generations of young girls to reach for the stars.”
Ride became interested in space when she was a kid. “If you asked me when I was 12 whether I wanted to be an astronaut, I’m sure I wou1d have said yes,” she said in a 2010 interview . “But I didn’t even think about that as a possible career.”
After studying physics in college and graduate school, Ride got her chance. She was accepted into NASA’s astronaut training program in 1978, and then chosen to be the first American female in space. In 1983, she blasted into space aboard the Challenger shuttle. “There is no amusement park ride on the Earth that even comes so close,” she said.
Ride returned to space on the Challenger a second time in 1984. Between the two missions, she spent a total of 343 hours in orbit. After that, she remained involved with the space program and also worked to share her passion for science with kids. She co-authored six science books for children , and started her own science education company.
Ride knew that she held a unique place in history. “I realized how important it was for a woman to break that barrier and open the door for other women to be able to do the same exciting things that the men had been doing,” she said.
Since Ride’s historic trip, more than 40 other American women have traveled to space.
They all had Ride to thank for opening the door to the final frontier.
1.Sally Ride was regarded as a national hero because she _____________.
A.had great courage and determination to face challenges
B.set an example to women to take up their careers
C.became the first American female in space
D.was interested in space programme when she was young
2.By saying “There is no amusement park ride on the Earth that even comes so close”, Ride really meant _______________.
A.she preferred a ride in an amusement park on the Earth
B.the trip to space was like that in an amusement park
C.she came close to an amusement park on the Earth
D.the trip to space was far more interesting than any ride on the Earth
3.The correct order of the following events that happened to Sally Ride is ____________.
a. accepted into an astronaut training program
b. spent a total of 343 hours in orbit
c. co-authored six science books for children
d. traveled to space aboard the Challenger
e. studied physics in co11ege and graduate school
A.e-a-b-c-d B.a-d-b-c-e C.e-a-d-b-c D.e-a-b-d-c
4.The passage is most probably taken out of ____________.
A.a novel B.a report C.a diary D.an essay
难度: 中等查看答案及解析
We tend to believe that older people are more positive and younger people are more sensitive to social cues (暗示).
Recently scientists investigated this idea by testing 10,000 men and women. They wanted to see if age affected a person’s ability to identify subtle facial emotions, such as fear and anger.
The researchers from McLean Hospital in the US used a Web-based platform to collect happiness data. It showed the participants two headshots (头部特写) of random people. They were then asked to identify which subject was angrier, happier, or more fearful. The research found that younger people were able to better identify angry and fearful facial cues than older people.
“From the previous studies , we know that the everyday experiences of an adolescent are different from an older person, but we wanted to understand how these experiences might be linked with differences in basic emotion understanding,” wrote Laura Germine, the study’s senior author.
But what is it that makes young people more sensitive?
“This is the exact age when young people are most sensitive to forms of negative social cues, such as bullying,” Lauren Rutter, the study’s lead author, told Science Daily. “The normal development of anger sensitivity can contribute to some of the challenges that arise during this phase of development.”
On the contrary, across the whole 10,000-person survey, researchers found no decline in the perception (感知)of happiness among older participants.
“What’s remarkable is that we see declines in many visual perceptual abilities as we get older, but here we did not see such declines in the perception of happiness,” Germine told Neuro Science News.
She added that these findings fit well with other research, showing that older adults tend to have more positive emotions and a positive outlook.
Following the paper’s release, Rutter told Neuro Science News that gathering their primary research online allowed the team to tap into a “much larger and more diverse sample set” than previous studies.
1.What is the result of the research?
A.We are often bullied while young.
B.We become less positive as we get older.
C.The younger we are, the happier we feel.
D.The younger, the more sensitive; the older, the more positive.
2.What makes young people more sensitive according to the text?
A.Their family backgrounds. B.Their negative experiences.
C.People around them. D.Their visual perceptual abilities.
3.How does the author support the theme of the text?
A.By giving examples. B.By stating arguments.
C.By explaining statistical data. D.By providing results.
4.Where is the text most probably taken from?
A.An announcement. B.A science magazine.
C.A travel guide. D.An official report.
难度: 中等查看答案及解析
What is happiness? When you can feel inner peace and satisfaction, you are happy. 1. This usually happens when we do something we love or achieve something that we value. It is our opinions that make us feel happy or unhappy. All of us constantly go through various situations or conditions, but we do not have to let them influence our reactions and feelings.2..
Try hard to make a change of the way you look at things.3. That means looking at the good and positive side of every situation. Pay attention to solutions, not problems. Listen to relaxing and uplifting music. Watch funny and interesting programs that make you laugh.
Always look at what you have done and not at what you haven’t done. Look at what you can do, not at what you cannot do. Each day do at least one act to make others happy. When you make someone happy, you’ll become happy, and then people will try to make you happy.4. On the contrary, be happy for their happiness. Communicate with happy people and try to learn from them to be happy. Remember ? do your best to stay detached (冷静的) when things do not occur as intended and desired. Detachment has much to do with inner peace.5.
A.I’ve never regretted it.
B.Always look at the bright side.
C.Do not envy people who are happy.
D.Stop asking for everyone’s approval.
E.Inner peace can lead to happiness, so smile more often.
F.Here are a few tips for increasing happiness in daily life.
G.It is usually experienced at a special moment.
难度: 中等查看答案及解析
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。
Last weekend, my parents told me a good news that my family would go camping with my uncle’s family.I feel so excited about it, because I could spend the whole night outside,which had never been happened before.When the day came, we brought the equipments and some food. In the afternoon, the two families settled down, and then they started to walk around. My cousins and I rushed to a forest and went to the highest point, there we could appreciate the whole sight. Stood on the highest place, I felt so greatly. We enjoyed a grander sight by climbing a greater height. At night, we set fire and danced happily. It was so a happy moment for me.
难度: 中等查看答案及解析
假定你是李华，你的美国朋友 Peter 想提高中文水平，进一步了解中国文化。请给他写一封信，推荐学习资源 (resource)。内容包括：
1. 学习资源：报纸、杂志及其他途径；
2. 推荐理由；
3. 表达祝愿。
注意：1. 词数 100 左右；
2. 可以适当增加细节，以使行文连贯；
难度: 中等查看答案及解析