It suddenly occurred to him ____ he had left his keys in the office.

A. that B. what C. whereD. which

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：2016屆北京市東城區(qū)高三下期綜合練習(xí)（一）英語(yǔ)試卷（解析版） 題型：閱讀理解

Music for Humans and Humpback Whales

As researchers conclude in Science, the love of music is not only a universal feature of the human species, but is also deeply fixed in complex structures of the human brain, and is far more ancient than previously suspected.

In the articles that discuss the field of bio-musicology, the study of the biological basis for the creation and appreciation of music, researchers present various evidence to, show that music-making is at once an original human "business", and an art form with skillful performers throughout the animal kingdom.

The new reports stress that humans hold no copyright on sound wisdom, and that a number of nonhuman animals produce what can rightly be called music, rather than random sound. Recent in-depth analyses of the songs sung by humpback whales show that, even when their organ would allow them to do otherwise, the animals converge on the same choices relating to sounds and beauty, and accept the same laws of song composition as those preferred by human musicians, and human ears, everywhere.

For example, male humpback whales, who spend six months of each year doing little else but singing, use rhythms (節(jié)奏) similar to those found in human music and musical phrases of similar length—a few seconds. Whales are able to make sounds over a range of at least seven octaves (八度音階), yet they tend to move on through a song in beautiful musical intervals, rather than moving forwards madly. They mix the sounds like drums and pure tones in a ratio (比例) which agrees with that heard in much western music. They also use a favorite technique of human singers, the so-called A-B-A form, in which a theme is stated, then developed, and then returned to in slightly revised form.

Perhaps most impressive, humpback songs contain tunes that rhyme. "This suggests that whales use rhyme in the same way we do: as a technique in poem to help them remember complex material," the researchers write.

1.The underlined words "converge on" in Paragraph 3 probably means__________.

A. tend towards B. refer to

C. turn into D. put forward

2.Which of the following shows the advanced musical ability in humpback whales?

A. They can remember complex material.

B. They can create pleasing patterns of music.

C. They can make sounds like drums continuously.

D. They can sing along with rhythms of western music.

3.What is the main idea of the article?

A. Animals are able to compose and enjoy music like humans.

B. Human beings borrow ideas in music from humpback whales.

C. Humpback whales are skillful performers in the animal kingdom.

D. Music-making it an ancient activity of both humans and animals.

4.The main purpose of the passage is to __________.

A. argue and discuss B. inform and explain

C. compare and advertise D. examine and assess

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2015-2016學(xué)年吉林松原油田高中高二下4月考試英語(yǔ)卷（解析版） 題型：七選五

根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

Parents are often scared to talk to their kids about money. In fact kids need to understand how to save and manage their money. Proper preparation of your children, even at a young age, can start them down the path of a successful financial life. 1. .

Talk early and often

Children start learning about money long before their first savings account, job or credit

card 2. Avoiding the subject until your child needs a bank account can make the conversation hasty (草率的) and confusing.

3. ___

A trip to the grocery story is a good time to explain price comparison, value and inflation. An ATM stop offers a chance to explain that money doesn't actually come from a machine. You can discuss both earned income, investment returns and even inheritance. Opening bills is a chance to talk about payment for services,, credit card debt and interest rates. Children need to be taught about debt, specifically loans and credit cards.

Talk about giving.

Children should learn that money doesn't always need to be used for them. 4. Don't just write the charitable check. Get the kids involved in the process by asking them to pick and check, charities.

Websites like http:// www. charitynavigator. org and guidestar. org provide information and ratings.

5. ___

If they open a savings account, they can place their savings in the bank to earn a small amount of interest. Besides, they can learn about fees, account maintenance ( 管理員) and even interest. It can provide a motivation for them to save money. You. can offer them a prize if they put the money into savings.

A. Open a checking and savings account.

B. It can also provide assistance to others.

C. Children are eager to know about money.

D. Begin the conversation even before they're in school by talking about work and money.

E. Here are some tips that might help you teach kids about money.

F. Parents should help their children know how to use money.

G.. Everyday activities are teachable moments.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2016屆天津市河?xùn)|區(qū)高三一�？荚囉⒄Z(yǔ)試卷（解析版） 題型：閱讀理解

Researchers around the world have been trying their hand at making better use of the huge amount of wind energy available in nature to produce clean energy. Apart from this, studies are being carried out to harness(利用) usable wind energy produced by man-made technologies.

One useful source identified by Indian inventor Santosh Pradhan about two years ago is a speeding train, which produces fierce wind that can be transformed into electricity.

According to Pradhan’s proposal, with a few small improvements in existing trains running in Mumbai, the largest city in India, at least 10,000 megawatts(兆瓦) of electricity could be harvested each day.

Building on this principle, designers Ale Leonetti Luparinia and Qian Jiang from Yanko Design have created a device(裝置) called T-Box that harnesses wind energy from speeding trains.

T-Box can be placed within the railway tracks. It is half-buried underground between the concrete sleepers(水泥枕木), which does not disturb the normal train operating at all. According to Yanko, around 150 T-Boxes can be fitted along a 1,000-meter railway track.

A train running at a speed of 200 kph can produce winds blowing at 15 miles a second. Based on this calculation, 150 T-Boxes can produce 2.6 KWH of electricity per day. The T-Box’s design won a silver medal in last year’s Lite-On Awards and was exhibited last summer at the Xue Xue Institute in Taipei, Taiwan Province.

Though the figures look impressive, it is important to remember that the design is still at a conceptual stage and hasn’t taken into account issues such as pieces of waste material produced by the device and the efforts and costs involved in the maintenance(維護(hù)) of the device.

We can expect the technology to see the light of the day only after it clears these issues. If so, rail travel, one of the greenest forms of travel, will become greener and more energy-efficient.

1.What can we learn about T-Box?

A. It will be fitted on the trains.

B. It is based on Pradhan’s idea.

C. It can turn electricity into light.

D. It was invented by an Indian scientist.

2.How much electricity can be produced per day by T-Boxes along a railway track of 100km?

A. 260 KWH. B. 2.6 KWH.

C. 150 KWH. D. 1.5 KWH.

3. It can be concluded from the last two paragraphs that ______.

A. T-Box has proved to be effective in harvesting wind

B. the maintenance of T-Box will be costly

C. there is much to do about T-Box

D. T-Box will come into use soon

4.According to the passage, which of the following statements is TRUE?

A. The Indian inventor Santosh Pradhan invented the speeding train.

B. The T-Box’s design won a silver medal in Lite-On Awards last year.[來(lái)源:Z

C. Rail travel has become one of the energy-efficient technologies in the world.

D. The India harvests 10,000 megawatts of electricity each day on average.

5.The passage is mainly written to _______.

A. encourage more people to travel by train

B. explain the advantages of electricity

C. tell readers how to save energy and money

D. introduce a new invention to readers

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2016屆天津市河?xùn)|區(qū)高三一模考試英語(yǔ)試卷（解析版） 題型：單項(xiàng)填空

My cousin insisted that she ______ to Australia for further study. But the company refused her application.

A. sendsB. will be sent

C. be sent D. would be sent

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2016屆天津市河?xùn)|區(qū)高三一�？荚囉⒄Z(yǔ)試卷（解析版） 題型：單項(xiàng)填空

Jack is late again. It is ______ of him to keep others waiting.

A. normal B. ordinaryC. common D. typical

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2016屆四川省成都市高三下學(xué)期第二次診斷考試英語(yǔ)試卷（解析版） 題型：閱讀理解

Professional footballers have worryingly poor teeth that could be affecting their performance on the football ground, say dentists. Their study on players at eight clubs in England and Wales, in the British Journal of Sports Medicine，showed nearly 4 out of 10 had cavities (蛀牙）and that athletes often had worse teeth than the general population. Regularly taking sugary foods is one possible explanation.

The dentists, from the International Centre for Evidence-Based Oral Health at University College London, examined 187 players’ sets of teeth. They found 53% had dental erosion (腐蝕），45% were bothered by the state of their teeth and 7% said it affected their ability to train or play. Around 40 % had cavities, compared with 30 % of people of a similar age in the general population.

Prof Ian Needleman, one of the researchers, said： “These are individuals who otherwise invest so much in themselves so it，s a surprising finding.

“There are two main groups — some have a catastrophic Professional footballers have worryingly pooreffect, they have very serious disease that stops them in their tracks and they cannot play or train.

“There'11 be others experiencing pain affecting sleep or sensitivity every time they take a drink. ”

At this level of athlete, even small differences can be quite telling.

Nutrition is one of the primary suspects with having too many sugary or acidic foods during training potentially accounting for cavities and erosion. A lot of air in the mouth during exercise can also dry it out so there is less protection.

While these findings are worrying, clubs are attaching greater importance to dental health and educating their players. According to StijinVandenbroucke, head of medicine and sports science at West Ham United, oral health is an area where many athletes have greater problems than the general population and there are clear benefits of oral disease prevention for athletes and clubs.1.What does the passage tell us about professional footballers teeth?

A. Nearly 4 out of 10 players in the UK suffer from toothaches.

B. They have been invested a great deal by individual players.

C. Many players' poor teeth bother their career and daily life.

D. British footballers teeth are examined regularly.

2.What mainly results in professional footballers' poor teeth?

A. Experiencing too much training.

B. Eating food with too much sugar.

C. Breathing in lots of air during exercise.

D. Having little education of oral disease prevention.

3. These findings are worrying clubs because____.

A. footballers aren’t willing to give up sugary or acidic food

B. they've spent much on their players' oral disease prevention

C. footballers have more serious tooth problems than the public

D. players' oral disease may lead to bad performance in games

4.This passage is most probably taken from____.

A. a dentist's diary B. a sports newspaper

C. a medicine magazine D. a science report

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2016屆北京市西城區(qū)高三下學(xué)期第一次模擬考試英語(yǔ)試卷（解析版） 題型：閱讀理解

In colleges around the country, most students are also workers.

The reality of college can be pretty different from the images presented in movies and television. Instead of the students who wake up late, party all the time, and study only before exams, many colleges are full of students with pressing schedules of not just classes and activities, but real jobs, too.

This isn’t a temporary phenomenon.The share of working students has been on the rise since the 1970s, and one-fifth of students work yearround. About one-quarter of those who work while attending school have both a full-courseload and a full-time job. The arrangement can help pay for tuition (學(xué)費(fèi)) and living costs, obviously. And there’s value in it beyond the direct cause: such jobs can also be critical for developing important professional and social skills that make it easier to land a job after graduation. With many employers looking for students with already-developed skill sets, on-the-job training while in college can be the best way to ensure a job later on.

But it’s not all upside. Even full-time work may not completely cover the cost of tuition and living expenses. The study notes that if a student worked a full-time job at the federal minimum wage, they would earn just over $15,000 each year, certainly not enough to pay for tuition, room, and board at many colleges without some serious financial aid. That means that though they’re sacrificing time away from the classroom, many working students will still graduate with at least some debt. And working fulltime can reduce the chance that students will graduate at all, by cutting into the time available for studying and attending classes.

There is little reward for attending but not finishing college. Students who wind up leaving school because of difficulty in managing work and class are likely to find themselves stuck in some of the same jobs they might have gotten if they hadn’t gone at all. The difficulty of working too much while in school can create a cycle that pushes students further into debt without receiving any of the financial or career benefits.

1.According to the passage, the reality of college students is that ______.

A. they throw parties a lot

B. they stay up late every night

C. they pay no attention to exams

D. they work besides attending classes

2.What is the indirect cause of an increasing number of working students?

A.The need of developing social networks.

B.The lack of summer jobs for young adults.

C.The chance of finding a job after graduation.

D.The expenses of high tuition and living costs.

3.We can learn from the passage that ______.

A. working students are more likely to finish college

B. students can cover their college expenses through working

C. students receive a huge reward for managing work and class

D. dropping out of college may not help students get career benefits

4.What is the best title for the passage?

A. The Difficulties of Landing a Job

B. The Struggle of Work-School Balance

C. The Reward of Working While Studying

D. The Images of Working College Students

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2015-2016學(xué)年江西宜春市高二下期第一次月考英語(yǔ)試卷（解析版） 題型：七選五

根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)，選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

If you have ever been discouraged because of failure, please read on. Often achieving what you plan to do isn’t the important thing. 1.

Two brothers decided to dig a deep hole behind their house. While they were working, a few older boys stopped by to watch. “What are you doing?” asked one of the visitors. “We plan to dig a hole all the way through the earth!” one of the brothers volunteered excitedly.

The older boys began to laugh, telling the younger ones that digging a hole all the way through the earth was impossible. After a long silence, one of the diggers picked up a jar full of spiders, worms and a wide variety of insects. 2. Then he said quietly and confidently, “Even if we don’t.”

3. And that is what a goal is for –to cause us to move in the direction we have chosen, in other words, to have us digging!

But not every goal will be fully achieved. Not every job will end successfully. Not every relationship will endure. Not every hope will come to pass. Not every love will last. 4.

So when you fail to reach your aim, perhaps you can say, “Yes, but look at what I found along the way! Look at the wonderful things which have come into my life because I tried to do something !” It is in the digging that life is lived. 5.

A. He broke the jar into pieces.

B. He opened the jar and showed the wonderful things contained in it to the laughing visitors.

C. Let me explain.

D. Not every dream will come true.

E. Their goal was far too high, but it did cause them to dig.

F. Here are some reasons for you.

G. And I believe in the end it is joy in the journey that truly matters.

查看答案和解析>>

同步練習(xí)冊(cè)答案