Mr. Black was the manager of a hotel in Atlanta. One weekend all of the hotels were full because of a large business meeting being held in the city. On Sunday night, three men came into Mr. Black’s hotel and asked for rooms. Mr. Black told them that there were no more rooms available. The men didn’t know what to do because they had no place to stay in.

Mr. Black wanted to help them. He remembered that there was an empty room at the far end of the first floor — Room 112. It was a very small room, and had rarely been used as a guest room before. So, he asked the three men if they would mind sharing that small room. They replied that they would be very satisfied so long as there was a room for them to stay in for the night.

Mr. Black then told them that the room would cost them $ 30 in total. On hearing this, each of the three men gave Mr. Black $ 10 before they left for their room.

However, Mr. Black soon began to think that $ 30 was really too much for that small room. He called his assistant over and said, “Here is $ 5. Give it back to the three men in Room 112. Each of them paid me $10. That’s too much.”

The assistant took the money. While he was on the way to that small room, he thought, “How can three men divide $ 5? I’ll give each of them only $ 1 and keep the $ 2 left to myself. The men will be happy to get anything back, and I can also make some money that way. After all, Mr. Black will never know anything about it.” So, the assistant returned only $1 to each of the three men.

Each man had first paid $ 10. After the assistant returned $1 to him, each man had actually paid only $ 9. There were three men. $ 9×3=$27. The assistant kept $ 2. $ 27 + $ 2= $ 29. Where is the missing dollar?

1.Why didn’t Mr. Black offer Room 112 to the three men at first?

A. The key had been lost.

B. It was too small for three men.

C. No one had stayed there before.

D. It was not bright enough.

2.How much did Mr. Black first ask each man for the room?

A. $ 30.B. $15. C. $10. D. $9.

3.How were the manager and his assistant in behavior?

A. The manager was honest but the assistant was not.

B. The manager worked hard, but the assistant was lazy.

C. The assistant was clever but the manager was not.

D. The manager did not know how to make money, but the assistant did.

4.Where is the missing dollar?

A. The three men took it.

B. The manager hid it secretly.

C. The assistant kept it.

D. There is no missing dollar.

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:高中英語 來源:2015-2016學(xué)年四川營山縣回龍中學(xué)高一12月檢測英語試卷(解析版) 題型:閱讀理解

So you think you know your dog. But how well does your dog know you? She probably recognizes you when she sees you. But can a dog tell by simply looking at you whether you have a happy or an angry expression on your face? Researchers in Austria have taught pet dogs to know the difference.

Dogs are very mindful of sound. When dog owners shout or speak in a strong, harsh(刺耳的) voice, dogs often act guilty and quietly move away from the area. Researchers have found that dogs can look at our faces, and tell the difference between a smile and a frown. The animals were able to recognize a look of approval from one of disapproval.

Researchers performed a series of experiments. They taught dogs to recognize facial expressions. They showed the dogs two pictures of either the upper of lower half of a person’s face. On one picture, the person looked happy. The other appeared angry. The dogs were then shown images of the eyes or mouths of people they had never seen before. They were also shown the left half of the faces used in training. Once the dogs learned to recognize which image was happy or angry, they could easily identify the same expressions in pictures of any face.

Corsin Muller, who led the study, says future studies will try to show whether dogs can learn the meaning of facial expressions—for example, whether a frown shows that someone is angry. “What we can say with our study is that they can tell these ones are different. But what we cannot be sure of at this point is what exact meaning they are associating with these different expressions.”

“Of course it seems likely that they would associate (聯(lián)系)some positive meanings with the smiley face and they would associate some rather negative meanings with the angry face. But what exactly they are associating with these expressions we cannot know at this point.” Corsin says.

1.The passage tells us mainly about _____________.

A. how dogs communicate with each other

B. What are the best ways to train our dogs

C. Why it’s necessary to know our pet dogs well

D. whether dogs can recognize our facial expressions

2.We know from the second paragraph that a dog_____________.

A. pays little attention to its owner’s looks

B. has to be trained to recognize our voices

C. is very sensitive to its owner’s voices

D. will feel guilty if their owner frowns

3.According to Corsin Muller, it’s been proven that dogs know_____________.

A. the exact meaning of a frown

B. a frown is an angry expression

C. human looks carry different meanings

D. a smiley face may have negative meanings

4.In which part of a website does the text probably appear?

A. Technology. B. Education.

C. Language. D. Economics.

查看答案和解析>>

科目:高中英語 來源:2016屆吉林長春第十一高中高三12月月考英語試卷(解析版) 題型:閱讀理解

If doctors want to test you for something, they’ll usually take a blood or urine sample (尿樣). But wouldn’t it be much more convenient if they just asked you to breathe through a special instrument?

In fact, your breath can say a lot about you. In traditional Chinese medicine, doctors draw a conclusion about the health state of a patient based on the smell of his or her breath; trained dogs and rats can identify the smells of the breaths of people suffering from certain cancers; traffic police also monitor drivers’ alcohol consumption by testing their breaths.

Just like blood and urine, your breath contains lots of “ metabolites ” --- the waste chemicals that the body produces, which vary from person to person. They are like personal health fingerprints, which is why scientists sometimes call them “ breath prints”, according to Science Daily.

Compared to blood or urine testing, breath testing takes only seconds instead of hours, and it requires neither a needle nor a container to hold the body fluids (體液). This means the test can be taken frequently to better detect early signs of diseases and monitor the progress of a medical treatment.

On the other hand, as an identifier, you might think that breaths are not as reliable as fingerprints since they might change based on what you eat. However, researchers in Zurich, Switzerland mapped 11 healthy volunteers’ chemical patterns by having them breathe through a special instrument, and they found that each pattern was unique and the patterns didn’t change much throughout the day, reported BBC.

“Our goal is to develop breath analysis to the point where it becomes competitive with the established analysis of blood and urine,” said Malcolm Kohler, professor at the University Hospital Zurich.

1.According to the text we know that __________.

A. breath varies from person to person based on food

B. your breath may give you away if you are not careful

C. doctors can test one’s breath to find about his illness

D. dogs can identify people with certain cancers

2.In comparison with blood or urine testing, breath testing is __________.

A. comfortable and convincing

B. traditional and reliable

C. accurate and competitive

D. quick and convenient

3.What is the author’s attitude toward breath testing?

A. Doubtful. B. Approving.

C. Unconcerned. D. Worried.

4.What can we infer from the text?

A. Breath testing is reliable and may have a bright future.

B. Blood or urine testing will be less used in medical treatment.

C. Doctors have found the best way to detect early signs of diseases.

D. Traditional Chinese medicine is becoming more and more popular.

查看答案和解析>>

科目:高中英語 來源:2016屆湖南株洲高三上學(xué)期教學(xué)質(zhì)量統(tǒng)一檢測一英語試卷(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)。

Here’s what you need to know about the various growth on your head.

Brush 100 times a day for healthier hair. Myth(傳言).

This is now known to risk damaging your hair. Brushing pulls out hair that isn’t ready to fall out. 1. . So brush gently for styling only.

Being stressed can make your hair fall out. Fact.

Severe stress can have a negative impact on your hair. All hair follicles(頭發(fā)毛囊) normally undergo periodic “rest” periods. 2. , and make the hair fall out in the three months following the stressful event. Normally hair growth restores naturally, but it’s important to deal with stress and seek medical advice to rule out underlying illness.

Hair can turn white with fright. Myth.

You can’t lose pigment(色素)in your hair because hair is dead when it leaves the head. 3. , however. In rare cases this can attack only pigmented hairs, leaving gray and white hair behind.

4. . Fact.

When it’s cold, blood is transmitted to internal organs to maintain body temperature, which decreases blood flow to the head. In warm weather, increased circulation to the skin benefits follicle activity and increases the rate of hair growth.

Cutting hair by the moon speeds its growth. Myth.

Some people believe that cutting hair under a waxing moon (上弦月)promotes growth. However, the universally-recognized fact is 5. at any time.

A. Brushing your hair often is recommended.

B. A severe shock could cause hair to drop out.

C. Hair does not grow back more strongly after it’s cut.

D. Always being angry will cause your hair to fall down.

E. Sudden stress can cause them to enter this resting phase.

F. Hair grows faster in the summer.

G. It often breaks healthy hairs.

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年陜西黃陵中學(xué)高二上學(xué)期期末英語試卷(解析版) 題型:閱讀理解

Listening to music an help me focus better. Since I discovered it two years ago, I’ve used music to get through boring work or to focus creatively. I’ve found that it can make even the dullest jobs enjoyable and help clear mental blocks to creativity.

I first noticed the good effects of music while playing video games. It was a few days before Christmas in 2012 and I was playing online video games. My parents had just given me a new MP3, so I decided to listen to music through the headphones while I played. After a few minutes I noticed a great change in my style of play. I was playing more naturally. The music relaxed me, and, to a certain extent, distracted me from the game, allowing my subconscious(潛意識(shí)的)talent to come through. The music also helped me block out the outside world. With those headphones on I was like a machine, moving from one task to the next without unnecessary thoughts or actions.

Music can also have a great effect on mood, if I’m in a bad mood at work, I’ll listen to some of Bob Marley’s and get down to business. It always takes my mind off what I’m doing and makes me a happier person. The same is true of classic rock. One summer, I did a boring job collecting bottle openers by hand. Without a radio playing classic rock in the background, I would have hated life.

Listening to music with relaxing rhythms and a positive message helps you forget your work and think happy thoughts. But the results you see will depend heavily on your personal tastes. Experiment with the types of music you listen to during certain tasks. By trial and error you’ll finally discover your best choice. I’m always looking for new concentration aids, so I’d love to know what type of music works best for me.

1.We can infer that the passage was written in .

A. 2010 B. 2012 C. 2013 D. 2014

2.The author first discovered the effects of music .

A. from his parents B. by chance

C. at work D. when he was a child

3.The author mentions the experience of collecting bottle openers in Paragraph 3 to .

A. tell us that life is dull

B. prove that music affects mood

C. tell us how to seek happiness

D. tell us bad mood can affect work

4.In order to get the greatest effect of music, you are advised to .

A. listen to some of Bob Marley’s

B. only choose relaxing music

C. test all kinds of music

D. listen to classic rock

查看答案和解析>>

科目:高中英語 來源:2014-2015學(xué)年內(nèi)蒙古鄂倫春自治旗大楊樹二中高一上學(xué)期期末英語卷(解析版) 題型:單項(xiàng)填空

Visitors not to touch the exhibits.

A. will request B. request

C. are requested D. are requesting

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年北京東城高一上學(xué)期期末考試英語試卷(解析版) 題型:其他題

根據(jù)中文補(bǔ)全句子,并將答案寫在相應(yīng)位置。

1.Mary是一個(gè)總是愿意幫助他人的熱心女孩兒。

Mary is a warm-hearted girl ________________.

2.救援人員為那些家園被毀的幸存者蓋起了避難所。

Rescue workers built shelters for survivors ________________.

3.我們老師總是讓我們使用字典。

Our teacher always ________ dictionaries.

4.Tom問這本書是屬于誰的。

Tom asks ________________.

5.我和我的同學(xué)們相處得很好,我們已經(jīng)成為好朋友了。

________ and we have become good friends.

6.她下定決心之后會(huì)告訴我們她的選擇的。

She will tell us about her choice ________________.

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年湖北長陽第一高級(jí)中學(xué)高二上學(xué)期期末英語試卷(解析版) 題型:閱讀理解

Can you touch your belly button (肚臍) by reaching behind your back and around your waist?

A new social trend has started in China, with thousands of netizens facing the challenge and uploading photographs of themselves to show off their bodies. Popular among many young female users on Weibo, the top, which translate as “reaching your belly button from behind to show your good figure,” was mentioned more than130 million times among Weibo users.

It not only spawned over 104,000 active discussions, but also led to concern about what means a healthy body image. “Look! It has taken me more than four hours but I’ve finally reached my belly button,” said Weibo user GayleRabbit. Another user Lucky said, “Why does my belly button suddenly look and feel completely new?”

While the trend was popular with many female users on Weibo, a photo uploaded by a male blogger caught people’s eye. “Is this pose (姿勢) really that difficult? I don’t think so,” Said Weibo user Sough Sa. His photo showing he was trying to touch his belly button was shared more than 8,452 times. It also drew over 2,000 comments from other users on Weibo. “Show the skinny girls how it’s done,” said one user.

Weibo user MedicalCream Tang Zhao said, “Now you did it! So you don’t have to lose weight and please stay the same.”

“I always support failures. Now I don’t feel so bad about not being able to touch my belly button,” said another user Jacket.

“Do we need to have flexible arms or a skinny waist to pull this off?” asked Weibo user Chantilly623.

But some experts argued that China’s new belly button trend was actually distorting (歪曲) society’s standards of beauty. “These poses and pictures can be fun but sometimes they also become an expression of competitiveness,” said Jolene Tan, Programmes and Communications Senior Manager in Singapore championing women’s rights. She also told the BBC that the trend seemed to be a way of examining women’s bodies to see whether they are good enough. However, experienced body trainers say the new trend is about flexibility of the arm and the size of the waist, rather than a good figure. A skinny person with fewer muscles has a better chance of achieving the pose.

1.The underlined word “spawned” in Paragraph 4 probably means “_____________”.

A. brought about B. put off

C. commented on D. resulted from

2.What can we learn from the above passage?

A. Boys show no interest in this new trend.

B. GayleRabbit reached her belly button on her first try.

C. Sough Sa’s photo of reaching his belly button was popular online.

D. Jacket felt sorry for not being able to touch his belly button.

3.What is experienced body trainers’ attitude towards the new trend meaning a good figure?

A. Disbelieving. B. Uncaring.

C. Doubtful. D. Worried.

查看答案和解析>>

科目:高中英語 來源:2015-2016學(xué)年河南安陽市高二下期末英語試卷(解析版) 題型:閱讀理解

Vancouver’s Chinatown—Canada’s largest Chinatown

Vancouver’s Chinatown is North America’s second biggest Chinatown, after San Francisco’s. Mandarin(普通話)and Cantonese are the mother tongues in 30% of Vancouver homes, which makes Chinese the largest “minority” ethnic group(少數(shù)民族).

Vancouver’s Chinatown is the place to visit for a taste of Chinese culture.

In Chinatown, there are a lot of traditional products and buildings, such as the stone lions which represent for the prestige(名聲;聲望),many red lanterns which stands for the happiness. What’s more interesting, in Chinatown, a typical Suzhou garden can be found. Chinatown not only expresses the culture of China to the other cultures, but also one part shows that Vancouver is the multicultural society. Chinatown which carries many Chinese cultures is built by Chinese in Vancouver. In the beginning, Chinatown was the community only for Chinese people, but nowadays, more and more other people from different countries are willing to know the Chinatown. It is the part of the Vancouver’s society, and Chinatown is also changing gradually in order to adjust to Vancouver.

There are lots of interesting markets with many varieties of fresh and dried seafood and mushrooms in the Chinatown. You’ll also find cheap and fine house ware and traditional Chinese medicine. During the summer, on weekend evenings, Keefer and Pender Streets become a busy open-air night market. If you have enough time for a meal, try at one of the many small restaurants. It is not an expensive, multi-course culinary(烹調(diào)的)adventure. Relax in the peaceful Dr. Sun Yat-Sen(孫中山)Classical Chinese Garden, or just steps on Pender Street. Visit the Chinese Cultural Centre Museum, or participate in one of its many activities.

1.In Vancouver’s Chinatown you can see all the things EXCEPT .

A. a typical Suzhou garden

B. the stone lions

C. the Chinese History Museum

D. red lanterns

2.From the third paragraph, we can infer that .

A. Canadians helped to build Vancouver’s Chinatown

B. only the Chinese people live in Vancouver’s Chinatown

C. in Vancouver’s Chinatown you can appreciate the culture of Vancouver

D. an increasing number of people come to Vancouver’s Chinatown

3.If you are tired you should have a rest in .

A. Dr. Sun Yat-Sen Classical Chinese Garden

B. the Chinese Cultural Centre Museum

C. an interesting market on the Pender Street

D. one of the many small restaurants

查看答案和解析>>

同步練習(xí)冊答案