Artificial intelligence (Al) technology may soon be a useful tool for doctors. It may help them better understand and treat diseases like breast cancer(癌症)in ways that were never before possible.
Rishi Rawat teaches Al at the University of Southern California's (USC) Clinical Science Center in Los Angeles. He is part of a team of scientists who are researching how Al and machine learning can more easily recognize cancerous growths in the breast. Rawat provides information about cancer cells to a computer. He says this data helps the machine learn."…You can put the data into them and they will learn the patterns and the pattern recognition. That's important to make decisions.”
David Agus is another USC researcher. He believes that "machines are not going to take the place of doctors." Computers will not treat patients, but they will help make certain decisions and look for things that the human brain can't recognize these patterns by itself." Once a confirmed cancerous growth is removed, doctors still have to treat the patient to reduce the risk of cancer returning. The form of treatment depends on the kind of cancer. Currently, researchers take a thin piece of tissue (动植物细胞的组织)，put it on a small piece of glass and add color to better see the cells .
That process could take days or even longer. Scientists say Al can do something better than just count cells. Through machine learning, it can recognize complex patterns or structures, and learn how the cells are organized. The hope is that machines will soon be able to make a quick identification of cancer that is free of human mistakes. "A11 of a sudden, we have the computing power to really do it in real time... We couldn't have done this, we didn't have the computing power to do this several years ago, but now it's all changed." Agus adds that the process could be done "for almost no cost in the developing world.” He says that having a large amount of information about patients is important for a machine to effectively do its job in medicine .
The University of Southern California researchers are now only studying breast cancer. But doctors predict Al will one day make a difference in all forms of cancer.
1.Many diseases like breast cancer will soon be ______.
A.cured with Al B.treated with Al
C.prevented with Al D.removed with Al
2.What can we infer from Agus' s words in Paragraph 3?
A.Al technology is to replace doctors.
B.Computers can be an aid to the human brain.
C.Computers can work well with little information.
D.Al technology is not accessible to developing countries.
3.What does the underlined word “it” in Paragraph 4 refer to?
A.Helping to count cells. B.Recognizing complex patterns.
C.Making a quick and right identification. D.Learning how the cells are organized.
4.What does this passage mainly talk about?
A.Research in breast cancer. B.Potential of Al for doctors.
C.Imagination about Al' s future. D.Achievements on medical care.
难度: 中等查看答案及解析
Four Excellent American Universities Princeton University
Princeton University is a private institution founded in 1746. Located in Princeton, New Jersey, it offers various events, activities and organizations. Famous alumni include the 28th US President Woodrow Wilson and former first lady Michelle Obama.
Harvard University
Harvard University is a private institution founded in 1636. Located outside Boston in Cambridge, Massachusetts, it is made up of more than 10 schools and institutes. Eight US presidents graduated from Harvard, including Franklin Roosevelt and John F. Kennedy.
Massachusetts Institute of Technology
MIT is a private institution founded in 1861. Located outside Boston in Cambridge, Massachusetts, MIT focuses on scientific and technological research. Famous alumni include Apollo 11 astronaut Buzz Aldrin and former UN Secretary General Kofi Annan.
Yale University
Yale University is a private institution founded in 1701. Located in New Haven, Connecticut, it is known for its excellent drama and music programs. Famous alumni include five US presidents and actress Meryl Streep.
1.Which university has the longest history?
A.Princeton University. B.Harvard University.
C.Massachusetts Institute of Technology. D.Yale University.
2.What do we know about Yale University?
A.It provides various events, activities and organizations.
B.It concentrates on scientific and technological research.
C.It is the university that John F. Kennedy graduated from.
D.It is known for its excellent drama and music programs.
3.What do the four universities have in common?
A.They are all private institutions. B.They are all named after cities.
C.They are all located in Cambridge. D.They all have more than 10 schools.
难度: 简单查看答案及解析
As a winner of the NSLI-Y Scholarship in high school, and then the Critical Language Scholarship in college, I lived in China for two summers with host families, studying Chinese for nine hours a day. Tack on to that the approximately 2,000 classroom hours I spent learning Chinese as an undergraduate, and it seems fair to say that a small fortune of resources has been invested in my Chinese ability.
Yet even with so much practice, I am not still achieving fluency, and it's unclear whether I’ll use my language skills regularly in my career. This leads me to reflect: What is it that drives me to drill tones and memorize characters?
Many people are quick to point out the value of language skills in an increasingly competitive workforce. However, language is about much more than just the ability to communicate. Foreign language study is tied to increased levels of empathy (同理心)，enhanced cognitive development, and more creative insight on the human condition. Increasingly, research shows that these benefits also apply to those with exposure to multiple languages, and not just those who achieve fluency.
A beneficial future for the US and China will be built upon understanding, respect and recognition. Language exchange can provide cultural insight and strengthen the common ground we stand on.
It is not the economic potential of my language skills that leads me to persist. Studying Chinese is the most modest way I can think of to approach China, a nation with over 5 ,000 years of complex history. From this point, I have experienced the beauty, hospitality of China. And my experience of studying Chinese has helped me form a sense of curiosity and a commitment to understanding and respect-and that's a start.
1.What do we know about the author?
A.He has worked hard at learning Chinese.
B.He has won many scholarships in China.
C.He began to learn Chinese in high school.
D.He has enjoyed his life living in China.
2.What does the author think of the language learning?
A.It just needs to drill tones and remember words.
B.It needs the experience of living with a host family.
C.It can promote learners' mental development.
D.It is only used for effective communication.
3.What can we infer from Paragraph 4?
A.The US and China will certainly have a bright future.
B.The US and China always respect and recognize each other.
C.Language exchange can help the US and China understand better.
D.The US and China start to share the same cultural insight.
4.Why does the author stick to learning Chinese?
A.To get some economic profits. B.To show off his language talent.
C.To achieve the language fluency. D.To have a close look at China.
难度: 困难查看答案及解析
We assume exercise improves our mental health. But what kind of exercise works best? Researchers analyzed the effect of different types of exercise. They looked at the link between physical activities and mental health and found team sports were the best, followed by cycling, either on the road or a stationary bike. Physical activities typically performed in groups, such as team sports and gym classes, provided greater benefits than running or walking.
Researchers rated mental health based on a survey. It asked respondents how many days in the previous month their mental health was “not good” due to stress, depression or problems withemotions. People who played team sports like soccer and basketball reported 22.3% fewer poor mental-health days than those who didn’t exercise. Those who ran or jogged fared 19% better, while those who did household chores 11.8% better.
They found team sports may have an extra benefit because of the social component, and yoga or tai chi can promote mindfulness, which is often touted as beneficial for mental health.
The researchers also found that those who exercise between 30 and 60 minutes had the best mental health, with 45 minutes the optimal duration. Exercising three to five times a week correlated with fewer dark days. “Over 90 minutes of exercise and there isn’t an extra benefit,” Dr. Chekroud said.
The study analyzed the exercise habits and mental health of 1.2 million US adults, based on self-reported answers to survey questions from the Centers for Disease Control and Prevention. It wasn’t a randomized controlled study and just an association between exercise and better mental health. It can’t explain if poor mental health causes people to exercise less or exercise causes people to have better mental health.
1.Which exercise will best help to cheer up the depressed?
A.Running and jogging outdoors. B.Playing soccer and basketball.
C.Doing some household chores. D.Cycling or riding a stationary bike.
2.What do the researchers say about team sports?
A.They boost self-esteem. B.They offer inner peace.
C.They involve interaction. D.They help achieve goals.
3.What Dr. Chekroud said means that_______.
A.more exercise isn’t always better
B.exercise habits decide mental health
C.exercise leads to better mental health
D.mental health causes people to exercise
4.What can be a suitable title for the text?
A.What sports work best for mental health? B.More exercise, better mental health!
C.Less exercise, poor mental health! D.What is the good effect of exercise?
难度: 中等查看答案及解析
What will Nick do tonight?
A.Attend a party. B.Go to a concert. C.Have a rest at home.
难度: 中等查看答案及解析
Why does the man come here?
A.To report his loss. B.To get a train ticket. C.To have a driving lesson.
难度: 中等查看答案及解析
What are the speakers mainly talking about?
A.The latest fashion. B.A vacation plan. C.A great museum.
难度: 中等查看答案及解析
Where will the speakers go?
A.Their office. B.A restaurant. C.The city park.
难度: 中等查看答案及解析
What does the man think of the film?
A.Disappointing. B.Confusing. C.Amusing.
难度: 简单查看答案及解析
听下面一段较长对话，回答以下小题。
1.How many bedrooms does the apartment have?
A.1. B.2. C.3.
2.For what didn’t Jim rent the apartment?
A.The high rent. B.The dark carpet. C.The small kitchen.
难度: 中等查看答案及解析
听下面一段较长对话，回答以下小题。
1.When did Jason watch a film?
A.Last Wednesday. B.Last Saturday. C.Last Sunday.
2.With whom did Jason climb the Great Wall?
A.His friends. B.His colleagues. C.His classmates.
3.What does the woman want to do?
A.Go back to the US. B.Upload pictures to her blog. C.Read about Jason’s experience.
难度: 中等查看答案及解析
听下面一段较长对话，回答以下小题。
1.How did Helen contact the company?
A.By email. B.By phone. C.By letter.
2.What is the duty of the job in the ad?
A.To look after children.
B.To work for a newspaper.
C.To serve in a phone company.
3.On what conditions would Helen accept the job?
A.The place is fun. B.The pay is good. C.The work is easy.
难度: 中等查看答案及解析
听下面一段较长对话，回答以下小题。
1.What is the woman doing?
A.Doing a survey. B.Hosting a program. C.Forecasting the weather.
2.Which place experienced many thunderstorms last month?
A.England. B.Wales. C.America.
3.What should the normal temperature be in India at this time of year?
A.42 degrees. B.45 degrees. C.48 degrees.
4.What is the weather like in Switzerland?
A.It is extremely hot. B.It has strong winds. C.It rains heavily.
难度: 困难查看答案及解析
听下面一段独白，回答以下小题。
1.What is the speaker?
A.An environmental official. B.A program producer. C.A scientist.
2.Where did the speaker do the task?
A.In a boat. B.At a university. C.At a TV station.
3.Why are the sharks returning?
A.There is more food to eat . B.The water quality is better. C.Hunting is forbidden.
难度: 中等查看答案及解析
Most college students have their money from their parents, but college is the time for them to begin true responsibility. With the right information at hand and some practice, you can definitely get major financial assistance for college tuition (学费). 1. The following is the ways you should know about.
Play a sport.
2. I know it is obvious to the football player that sports will increase the possibility, but did you know you can get scholarships for less-known sports? Have a try on golf, sailboat and marathon! A senior year spent learning and perfecting a new sport can lead to a full ride in college.
Do voluntary work.
Most nonprofits have good scholarships for their volunteers. Try volunteering in your community or a community chapter of a major organization. 3.It can be best to work for an organization that you are familiar or have a childhood history with.
4.
Try building a personal connection with someone at a scholarship society. Building a relationship through visits, phone calls and gifts can make you stand out the crowd. Remember, these people chose the winners om hundreds of applications a day and a personal touch can really make a difference.
Apply early.
It can never be too early to apply for a scholarship Applying early is another way to stand out of the crowd You can definitely score a better scholarship earlier with much less competition. 5.
Applying early can lead to more applications overall, and someone who applies to 100 scholarships against 10 has a much better chance of being awarded!
A.Bear in mind.
B.Keep in touch.
C.It can also be a numbers game.
D.Living in a poor community may help you a lot.
E.Some of the highest scholarships are given to college athletes.
F.A high level of community service will give you a leg up in college.
G.Experience has proven that scholarships will be given to those who deserve.
难度: 中等查看答案及解析
I like buying clothes and my sister’s best friend loves buying clothes for me as well! That_______ I have plenty of clothes!
Then one day I_______my closet and it was like a light suddenly shone upon me. Pictures of homeless kids flashed into my _______. I thought of them begging on the streets to have _______ to give to their parents back at home.
My heart hurt _______ led me to a surprising act! I took several plastic _______and filled them with clothes, _______my closet half full. I looked for my little sister and _______her to the streets for some fun and adventure!
It was noon and the sun was _______our skin, but who cared about that? There they were, like sheep without a shepherd(牧羊人). My ________broke. I gathered my feelings and approached two kids who were about to ________me for money. Fear was painted on their ________ when I came to them. I handed them the bags and they ________, “What’s this?” I said, “They are all yours.
You ________these with your family. Okay?”
They didn’t ________ for a few moments but when they did, my heart was filled with a different feeling, ________ two big arms hugging my heart and sending a ________ feeling through my whole being.
“Thank you, Big Sister. We will ________share these with them!” they said. And they looked at the other kids on the street corners.
Wow! How ________ it bore fruit! I gave to them and their first reaction was to give to others!
I was so touched by the ________, and I believe my little sister had a change of heart as well.
1.A.expects B.hopes C.means D.believes
2.A.looked after B.looked up C.looked for D.looked at
3.A.mind B.brain C.eyes D.hands
4.A.something B.nothing C.everything D.anything
5.A.but B.and C.or D.when
6.A.card B.baskets C.bags D.boxes
7.A.watching B.leaving C.finding D.taking
8.A.carried B.got C.sent D.took
9.A.cooking B.burning C.boiling D.freezing
10.A.heart B.head C.shoe D.glasses
11.A.thank B.harm C.hurt D.approach
12.A.clothes B.noses C.faces D.heads
13.A.announced B.answered C.asked D.said
14.A.compare B.share C.do D.wear
15.A.touch B.accepted C.move D.speak
16.A.like B.as C.with D.without
17.A.cold B.hot C.warm D.cool
18.A.hardly B.never C.ever D.certainly
19.A.quickly B.slowly C.poorly D.recently
20.A.experiment B.experience C.accident D.story
难度: 中等查看答案及解析
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。
Traditional Chinese medicine (TCM) is gaining global popularity. According to a government white paper, TCM 1.(introduce) in 183 countries and regions around the world so far.
Westerners' understanding of TCM, however, may be limited to acupuncture(针灸), cupping(拔罐) and massage. As 2.matter of fact, Chinese herbs play a more important role than physical 3.(treat) in getting rid of diseases and keeping the body 4.good condition in the TCM treatment system.
Herbs are made into pills, powder and soup, 5.are used for different kinds of illnesses.
The herbs, 6.(they) quality and quantity, and the processing of the ingredients jointly determine the effectiveness of the prescription. TCM, 7.(compare) with Western medicine, lacks standardization because the chemical composition and functions of its medicines are unclear and their 8.(effect) are unstable. 9.(fortunate), standardization has improved in recent decades, with an increasing number of factories10.(produce) patented TCM drugs.
难度: 中等查看答案及解析
下面短文中共有10处语言错误，请在有错误的地方增加、删除或修改某个单词。
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、每句不超过两个错误；
2、每处错误及其修改均限一词；
3、只允许修改10处，多者(从第11处起)不计分。
I was walking to school this morning when I caught sight of a old woman lie on the ground. I quick ran over to help her up and asked her that was wrong. She told me she slipped and fell because heart trouble. I was worried or decided to take her to a hospital nearby. And then I contacted my family. Soon her son and daughter came to the hospital. I was told them some informations about the incident. They thanked and praised me for my kindness. Although I was late for school today, I felt very proud of what I have done.
难度: 中等查看答案及解析
假定你是李华，你校交换生Jake得知学校最近将举行一次茶文化节，发邮件向你询问有关信息。请你回复邮件，内容包括：
1. 活动时间和地点；
2. 活动安排；
3. 发出邀请。
注意：
1. 词数100左右；
2. 可以适当增加细节，以使行文连贯。
Dear Jake,
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
难度: 中等查看答案及解析