相关习题
 0  147623  147631  147637  147641  147647  147649  147653  147659  147661  147667  147673  147677  147679  147683  147689  147691  147697  147701  147703  147707  147709  147713  147715  147717  147718  147719  147721  147722  147723  147725  147727  147731  147733  147737  147739  147743  147749  147751  147757  147761  147763  147767  147773  147779  147781  147787  147791  147793  147799  147803  147809  147817  151629 

科目: 来源: 题型:

【题目】 Bill Gates’ body might live in the present, but his brain lives in the future. He has made a career out of predicting what will happen in matters of computing, public health and the environment. He correctly predicted the rise of smartphones and social media, and his latest predictions could come true, too. Here’s what Gates predicts for the future of our world.

In his Annual Letter 2015, Gates made the prediction that Africa’s agriculture industry would increase productivity by 50% by 2030. Now the continent buys about $50 billion worth of food from other countries each year, although 70% of people in Africa are farmers. “In the next 15 yearshowevercreations in farming will solve the food problem in Africa,” Gates wrote. “The world has already developed crops that are more productive; with all the technologies, African farmers could possibly double their harvests.”

By 2035, there could be almost no poor countries. In his Annual Letter 2014, Gates bravely predicted that continued levels of foreign help could mean there would be almost no more poor countries by 2035. “Almost all countries will be what we now call lower-middle income or richer,” Gates explained. “Countries will learn from their most productive neighbors and benefit from things like better seeds and the digital revolution. ”

By 2030, the world will discover a clean-energy breakthrough to power our world. One of Gate’s more hopeful predictions which came in 2016 said that wind, solar, or some other renewable resources would power most of the world within 15 years. “The difficulty we face is big, perhaps bigger than many people imagine,” he wrote in his letter. “But so is the chance to make things better.” Many of the poor countries he visited had no running water or electricity. At night this meant they couldn’t light or power their homes, and keep businesses open.” If the world can find a type of cheap, clean energy, it will do more than prevent climate change,” he wrote. “It will change the lives of millions of the poorest families.”

1What does the author think of Gates’ predictions?

A.They sound quite unreal.B.They are mainly about computers.

C.They will probably come true.D.They haven’t produced any end result.

2How is the agriculture in Africa?

A.It is losing its workforce.B.It is in need of productivity.

C.It can satisfy the local needs.D.It is as backward as Africa’s industry.

3What should poor countries do according to Gates?

A.Use expensive seeds.B.Expect less foreign help.

C.Rely on the digital revolution.D.Learn from the experience of other countries.

4What’s Gates’ attitude to clean-energy development?

A.It’s no easy task.B.It’s hard to imagine.

C.It can put climate change to an end.D.It has little to do with poor families.

查看答案和解析>>

科目: 来源: 题型:

【题目】 The other day on a cold night, I left my wife and drove from Harrisburg to Lewisburg, a distance of about 100 miles. It was rather late. Several times I got stuck behind a slow-moving truck on a narrow road with a solid white line on my left, and I became increasingly impatient.

At one point along an open road, I came to a crossing with a traffic light. I was alone on the road by now, but as I drove near the light, it turned red and I made a stop. I looked left, right and behind me. Nothing. Not a car, no suggestion of car lamps, but there I sat, waiting for the light to change, the only human being for at least a mile in any direction.

I started wondering why I refused to run the light. I was not afraid of being caught, because there was clearly no policeman around, and there certainly would have been no danger in going through it.

Much later that night, the question of why I’d stopped for that light came back to me. I think I stopped because it’s part of a contract we all have with each other. It’s not only the law, but it’s an agreement we have, and we trust each other to honor it: we don’t go through red lights.

Trust is our first inclination. Doubting others does not seem to be natural to us. The whole construction of our society depends on mutual trust, not distrust. We do what we say we’ll do; we show up when we say we’ll show up; and we pay when we say we’ll pay. We trust each other in these matters, and we’re angry or disappointed with the person or organization that breaks the trust we have in them.

I am so proud of myself for stopping for the red light that night.

1How does the author feel about the truck driver?

A.Pleased.B.Satisfied.C.Sorry.D.Annoyed.

2What can we infer about the author?

A.He hates driving at night.B.He desired to cross the red light that night.

C.He approves of obeying traffic rules by himself.D.He is easy when suffering the traffic jam.

3What is the meaning of the underlined word “inclination” in paragraph 5?

A.Tendency.B.Faith.

C.Adjustment.D.Guidance.

4What’s the message the author tries to convey?

A.Politeness matters.B.Hold belief in human nature.

C.People should be patient and helpful.D.There’s a need to improve traffic rules.

查看答案和解析>>

科目: 来源: 题型:

【题目】NASA Student Competitions

NASA Human Exploration Rover Challenge

Teams of high school and college students are challenged to design and build a human-powered vehicle to travel across the simulated(模拟的) surface of another world. The course includes 14 roadblocks and 5 tasks, and teams must successfully follow NASA instructions. Each U.S. school may enter up to two teams. For international entries, no more than four teams from each country will be accepted.

International Team Registration Deadline: July 12

U.S. Team Registration Deadline: August 16

NASA Lunabotics Competition

Lunabotics challenges teams to design, build and run their autonomously operated robot, travel through simulated off-world areas and dig the simulated lunar soil. This challenge includes presentations and demonstrations, and a systems engineering paper explaining the methodology the team uses to design and build their robot.

Registration Deadline: July 18

NASA SUITS Design Challenge

NASA Spacesuit User Interface Technologies for Students (SUITS) gives students an authentic engineering design experience supporting NASA’s Artemis mission—landing American astronauts safely on the Moon by 2024! This activity challenges students to design and create spacesuit information displays within AR environments.

Proposal Deadline: July 25

2020 BIG Idea Challenge

NASA’s 2020 Breakthrough, Innovative and Game-changing (BIG) Idea Challenge is open to teams of 5 to 20 students. Teams are challenged to submit proposals for sample lunar payloads(有效载荷) that demonstrate technology systems needed for exploration and science in the permanently shadowed regions in and near the Moon’s polar regions. Selected teams will receive awards from $50,000 to $180,000 to bring their ideas to life!

Entry Deadline: August 16

1John, a student who is good at designing vehicles, can enter______________.

A.2020 BIG Idea ChallengeB.NASA Lunabotics Competition

C.NASA SUITS Design ChallengeD.NASA Human Exploration Rover Challenge

2What does NASA Lunabotics Competition require of participants?

A.They need to finish building their robot on July 18.

B.They have to complete a course of 5 tasks.

C.They need to create their own simulated environments.

D.They should write a paper showing how they build their robot.

3Which of the following statements about the last two competitions is true?

A.They both require submitting proposals before August.

B.They both ask participants to bring their ideas to life.

C.They are both preparations for Moon exploration.

D.Both of them will present winners with big awards.

查看答案和解析>>

科目: 来源: 题型:

【题目】阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成一篇完整的短文。续写的词数应为120左右。

My fiance(未婚夫)and I were excited about shopping for our first home.But our funds were limited,and none of the houses in our price range seemed satisfactory.

One agent recommended a house in particular..Although her description sounded wonderful,the price was beyond our range,so we declined.But she kept urging us to have a look at least.

We finally did and it was love at first sight:It was Our Home,small and charming, overlooking a quiet lake.Walking through the rooms and talking with the owners,a nice elderly couple,we felt the warmth and happiness of the marriage within that home.As perfect as it was,the price remained too high for us.But every day,we would sit by the lake, looking at the house and dreaming of what it would be like to live there.

Days later,we made a(n)offer-far below the asking price.Surprisingly,they didn't laugh at us.They renewed their offer instead.It was also much more than we could afford,but far less than the original asking price.

The next day,we got a disappointing message that another buyer had offered a much higher price.Even so,we decided to talk with the owners directly.We made our final offer, which still was thousands of dollars 'less than' the other buyer's bid.We knew it,but we had to try.Nobody knew if we could get it.

Paragraph 1:We went to the owners' home after we made our final offer.The other buyer came to visit the owners too.

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Paragraph 2:The owner looked at us and said,"I want to sell my house to you!"

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

查看答案和解析>>

科目: 来源: 题型:

【题目】 The classic model of education a burst at the start and company training — is breaking down. One reason is the need for new and constantly updated skill. Manufacturing increasingly calls for brain work rather than manual labor.

Pushing people into ever-higher levels of formal education at the start of their lives is not the way to handle the problem. Just 16% of Americans think that a four-year college degree prepares students very well for a good job. Although a vocational education promises that vital first hire, those with specialized training tend to withdraw from the labor force earlier than those with general education perhaps because they are less adaptable.

At the same time on-the-job training is shrinking. In America and Britain it has fallen by roughly half in the past two decades. Self-employment is spreading, leaving more people to take responsibility for their own skills. Taking time out later in life to pursue a formal qualification is an option, but it costs money and most colleges are meant for youngsters.

The market is innovating to enable workers to learn and earn in new ways. Providers from General Assembly to Pluralsight are building businesses on the promise of improving careers. Massive open online courses (MOOCs) have turned away from lectures on Plato or black holes in favor of courses that make their students more employable. At Udacity and Coursera self-improvers pay for cheap, short programs. By offering degrees online, universities are making it easier for professionals to polish their skills. A single master’s program from Georgia Tech could expand the annual output of computer-science master’s degrees in America by close to 10%.

Lifelong learning starts at school. As a rule, education should not be narrowly vocational. The curriculum needs to teach children how to study and think. A focus on “metacognition” (元认知) will make them better at picking up skills later in life.

1Which is the reason why traditional education is failing?

A.It bursts educators’ bubble in the beginning.B.Companies can’t afford training fees.

C.Old skills can’t meet the present needs.D.It fails to develop one’s brain.

2What can we infer from the text?

A.The more knowledgeable one is, the more likely he is to be employed.

B.Most Americans are poor at their studies in the college.

C.More than 80% of Americans have to be self-employed now.

D.Returning to college after working is not considered worthwhile.

3What does the underlined word “innovating” in Paragraph 4 mean?

A.Reforming its system.B.Declining little by little.

C.Booming all at once.D.Wasting time and energy.

4How do colleges adapt to the present education model?

A.They open online courses.B.They provide easier access to updated skills.

C.They pay for cheap short programs.D.They lower the standard for master’s degree.

查看答案和解析>>

科目: 来源: 题型:

【题目】单词拼写

1Shared bikes are often left ___________(遗弃)either on the sides of the road or at bus stops.

2I would _________感激)it if you could offer me the chance of working as a volunteer here.

3Always remember the __________(指示)on the bottle carefully and take the right amount of medicine.

4To her _________(难堪),she couldn't think of his name and stood there, saying nothing.

5My father is so lively and ___________(活力)that he takes an hour's exercise every day.

6I am just as ___________(热情的)about my job as the day I first started.

7In order to protect our environment, we can't freely cut down trees without the government's ________(允许).

8There is lots of information __________(可获得)on the Internet, so the Internet is more and more important to us.

9The ___________(故障)of the computer system is caused by the new virus.

10What do you imagine will be your future ___________(职业)?

11The hospital has recently obtained new medical__________(设备),allowing more patients to be treated.

12More and more people have come to realize the importance of keeping a__________(均衡)diet.

13In__________(结论),I like being praised, but I know sometimes it's not always good.

14It is important to pay your__________(电)bill on time, as late payments may affect your credit.

15No decision will be made until all the candidates have been____________(面试).

查看答案和解析>>

科目: 来源: 题型:

【题目】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2处。涉及一个单词的增加、删除或修改。

增加:此行缺一个词在缺词处加一个漏字符号(N),在其下面写出该加的词。

删除:把多余的词用斜线()划掉。

修改:在错的词下划横线,在该词下面写出改正后的词。

注意:1.每处错误及其修改均仅限词;

2.只允许修改10处,多者(从第11处起)不计分。

Our model of which a garden should be goes back to childhood. My sister and I like to visit Grandmother when we were young. After rushing out of car, we ran to our grandmother’s garden. It was interested that, with seasons changing, the garden would to take on different looks. They were neat paths and a wooden bridge over a pool. She used to keep a small garden, including ducks and another animals, but later she made it much large. Grandmother looked after the garden with great care. We often helped Grandmother grow several row of plants or pick vegetables. Being with her was real enjoyable. That’s our dream garden, a place full of love of Grandmother.

查看答案和解析>>

科目: 来源: 题型:

【题目】请阅读下面文字,并按照要求用英语写一篇150词左右的文章。

Li Jiang: Have you heard this? Our school will set up a selective course, teaching students basic techniques for making a kite.

Su Hua:Yes, I have.The course is meant to inherit (传承) the kite-making craft.

Li Jiang: It's really exciting. I've always been interested in making kites. I want to enroll(报名)in the course.

Su Hua: I want to attend kite-making classes too. But I'm afraid the craft is too difficult for me.

Li Jiang: Don't worry about it.We can learn together.

Su Hua: There is another problem. My parents won't permit me to take part in such activities.They want me to spend more time on my subjects.

Li Jiang: By making kites we can be innovative, which is good for our study. I think they will support you.

Su Hua:Yes, that's right. I'll think about it.

(写作内容)

1.用约30个词概括上述信息的主要内容;

2.如果你是该校学生,你会报名参加风筝制作课程吗?请说明理由(不少于两点)。

(写作要求)

1.写作过程中不能直接引用原文语句;

2.作文中不能出现真实姓名和学校名称;

3.不必写标题。

(评分标准)

内容完整,语言规范,语篇连贯,词数适当。

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

查看答案和解析>>

科目: 来源: 题型:

【题目】 A warm drink of milk before bed has long been the best choice for those wanting a good night’s sleep. But now a study has found it really does help people nod off—if it is milked from a cow at night.

Researchers have discovered that “night milk” contains more melatonin(褪黑激素), which has been proven to help people feel sleepy and reduce anxiety.

The study, by researchers from Seoul, South Korea, involved mice being fed with dried milk powder made from cows milked both during the day and at night.

Those given night milk, which contained 10 times the amount of melatonin, were less active and less anxious than those fed with the milk collected during daytime, according to the study published in The Journal of Medicinal Food.

Night milk quickened the start of sleep and caused the mice to sleep longer.

While the effect of cows milk harvested at different time has not been tested on humans up to now, taking melatonin drugs has been suggested to those who are struggling to fall asleep at night.

Previous studies have also indicated that milk can be excellent for helping sleep because of the calcium content, which helps people to relax.

Milk is also sugar-free and additive-free with nutritionists recommending skimmed milk as the best choice before bed as it is the least fattening. The more fat you take in before bedtime, the greater burden you will put on your body at night.

1According to the text, the mice fed with daytime milk_______.

A.started sleep more easily

B.were more anxious

C.were less active

D.woke up later

2Which of the following is true of melatonin according to the text?

A.It’s been tested on mice for ten times.

B.It can make people more energetic.

C.It exists in milk in great amount.

D.It’s used in sleeping drugs.

3What can be a suitable title for the text?

A.Night Milk and Sleep

B.Fat, Sugar and Health

C.An Experiment on Mice

D.Milk Drinking and Health

4How 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 research results.

查看答案和解析>>

科目: 来源: 题型:

【题目】Under the regulation, restaurants and hotels shall stop offering throwaway items_______customers request them.

A.sinceB.onceC.unlessD.until

查看答案和解析>>

同步练习册答案