题目内容

阅读下面材料,在空白处填入适当的内容(不多于3个词)或括号内单词的正确形式。

When I lived in Spain, some Spanish friends of 1.______ ( I ) decided to visit England by car. Before they left, they asked me for advice about how to find accommodation. I suggested they 2._____ stay at “ bed and breakfast” houses, because this kind of accommodation gives a foreign visitor a good chance 3._____ (speak) English with the family. My friends accepted my advice, but they came back with some 4.____ (fun ) stories.

“ We did not stay at bed and breakfast houses,” they said, “ because we found that most families were away on holiday.” It was obviously impossible. Finally I understood what 5.____ (happen). My friends spoke little English, and they thought“VACANCIES” meant “holidays”, 6.____ the Spainish word for “holidays” is “vacancies”. So they did not go to the houses with the signs outside saying “ VACANCIES”, which in English means there are free rooms. Then my friends went 7.____ ( direct ) to the houses with the signs saying“NO VACANCIES ” , because they thought this meant the 8.____ ( own ) of the houses were not away on holiday. But in fact, all of these houses 9._____ (fill ) with travelers. As 10.____ result, they stayed at hotels!

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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

Secret codes (密码)keep messages private。Banks, companies, and government agencies use secret codes in doing business, especially when information is sent by computer.

People have used secret codes for thousands of years. 1. Code breaking never lags(落后) far behind code making. The science of creating and reading coded messages is called cryptography.

There are three main types of cryptography. 2. For example, the first letters of “My elephant eats too many eels” Spell out the hidden message “Meet me.”

3. You might represent each letter with a number, For example, Let’s number the letters of the alphabet, in order, from 1 to 26. If we substitute a number for each letter, the message “Meet me” would read “13 5 20 13 5.”

A code uses symbols to replace words, phrases, or sentences. To read the message of a real code, you must have a code book. 4.For example, ”bridge“ might stand for “meet” and “out” might stand for “me.” The message “bridge out” would actually mean “Meet me.” 5. However, it is also hard to keep a code book secret for long. So codes must be changed frequently.

A. It is very hard to break a code without the code book.

B. In any language, some letters are used more than others.

C. Only people who know the keyword can read the message.

D. As long as there have been codes, people have tried to break them.

E. You can hide a message by having the first letters of each word spell it out.

F. With a code book, you might write down words that would stand for other words.

G. Another way to hide a message is to use symbols to stand for specific letters of the alphabet.

See a cellphone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes just by hitting “print” on your computer.
You might find it hard to believe that you could actually “print” an object like you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays ink onto paper line by line, modern 3D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.
Instead of ink, the materials the 3D printer uses are mainly plastic, resin and certain metals. The thinner each layer is—from a millimetre to less than the width of a hair—the smoother and finer the object will be.
This may sound like a completely new technology, but the truth is that 3D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it.
Last year, though, saw a big change in the 3D printing industry—printers became much cheaper. For example, 10 years ago a desktop 3D printer might have cost £20,000, while now they cost only about £1,000, according to the BBC.
Taken out of the factory and introduced to more diverse and common uses, 3D printing can create just about anything you can think of—flutes , bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell University in New York have just made an artificial ear using a 3D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.
However, as 3D printing becomes more common, it may bring about certain problems—such as piracy. “Once you can download a coffee maker, or print out a new set of kitchen utensils on your personal 3D printer, who will visit a retail store again?” an expert in 3D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3D printer to print out a fully functioning gun?

1.According to the article, in the future, the 3D printing technology will _______.

A. enable people to make better purchases online
B. change the way we make many products
C. be applied as widely in our daily life as computers
D. shorten the time it takes for people to get what they buy online

2.What happened in the 3D printing industry last year?

A. The 3D printing technology was taken out of the factory.

B. The 3D printing technology began to be used in various fields.

C. The 3D printer was used for medical treatment for the first time.

D. The 3D printer became more affordable for consumers.

3.How is the last paragraph developed?

A. By giving examples.

B. By making comparisons.

C. By analyzing the cause and effect.

D. By presenting research findings.

4.What is the best title of the passage?

A. Great Demand for 3D Printers

B. Technology in the Future

C. Online Shopping Disappearing

D. Printing out Everything

Will it matter if you don't have your breakfast? A short time ago, a test was given in the United States. People of different ages, from 12 to 83, were asked to have a test. During the test, these people were given all kinds of breakfasts, and sometimes they got no breakfast at all. Scientists wanted to see how well their bodies worked when they had different kinds of breakfasts.

The rules show that if a person eats a right breakfast, he or she will work better than if he or she has no breakfast. If a student has fruit, eggs, bread and milk before going to school, he or she will learn more quickly and listen more carefully in class.

The result is opposite to what some people think. Having no breakfast will not help them lose weight. This is because they are so hungry at noon that eat too much for lunch. They will gain weight instead of losing it. You will lose weight if you reduce your other meals.

1. During the test , the people were given _________.

A. no breakfast at all.

B. different breakfast or sometimes none

C. very rich breakfasts

D. little food for breakfast

2.Scientists wanted to know whether __________.

A. breakfast had any effect on work and studies.

B. people were interested in breakfast

C. breakfast did harm to people 's health

D. people would work better without breakfast

3.According to the passage , some people think without breakfast they will ____.

A. not be hungry at all.

B. get a good result in their work

C. gain weight

D. lose weight

4. Which of the following sentence is NOT right?

A. It is bad for your health to have no breakfast.

B. No breakfast and more lunch may make you fatter.

C. The more breakfast you have, the more quickly you will learn in class.

D. If you don't eat much for lunch and supper , you may lose weight.

阅读理解。

“Keep out or I’ll chase you out! This is my property!”

You hear this every spring. It is a long musical sound --- a bird song! Birds use their songs to communicate different messages to one another. People who study bird sounds are learning their meanings.

Usually it is the male that sings. Early in spring he sings to say that he has picked out a piece of property. He sings to attract a female of his same kind. Together they will raise a family in his territory (领地). He sings to tell all other birds of his kind to keep out.

Each kind of bird has its own type of song. Cardinals sing something that sounds a little like “What cheer, cheer, cheer.” Towhees sing, “Drink your tea.”

Most of the time, birds pay attention only to the songs of birds of their own kind. Cardinals answer cardinals, and song sparrows answer song sparrows. A cardinal knows that a song sparrow will not try to steal its mate. So you can see one reason why a cardinal may chase away another cardinal but will not bother a song sparrow.

Most different kinds of birds eat different things. To find enough to eat, a bird needs a big piece of land to search in. Many kinds of birds have some ways of dividing up the land into territories. Song sparrows, cardinals ovenbirds, and white-throated sparrows are some of the birds that have territorial systems.

Especially in early spring, birds work out the boundaries between their territories by singing “keep out” threats and by chasing and fighting each other. The birds continue singing to tell females that they have set up territories. Neighboring birds seem to agree that there are make believe fences between their pieces of property. Then they do not have to waste energy chasing each other instead of taking care of their young.

Scientists guessed that some birds could recognize their neighbors by small differences in their songs. Two scientists who studied white-throated sparrows found that these birds can even tell the difference between songs of individual birds of their own kind. White-throated sparrows have songs that seem to say “I’m your neighbor” or “I’m a stranger” or “I’m your neighbor to the west.” Other kinds of birds could tell neighbors from strangers by their songs, too.

1.What is the article mainly about?

A. How birds build up their territories.

B. How birds sing to communicate.

C. How male birds chase after females.

D. How scientists recognize birds’ songs.

2.A cardinal may not keep a song sparrow out of its territory because ________.

A. they sing different songs

B. they have separate territories

C. it feels no threat from a song sparrow

D. song sparrows are friendly to other birds

3.Some birds have their own territorial systems so that ________.

A. they don’t need to fight or chase each other

B. they often work together against threats

C. they build up fences to protect their property

D. they find a big piece of land to search for food

4.What can we conclude from the article?

A. Male birds use their songs to communicate more than females.

B. Scientists have learned the meanings of all white-throated sparrows sing.

C Not all birds can recognize their neighbors by small differences in their songs.

D. White-throated sparrows are the smartest birds the scientists ever found.

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