题目列表(包括答案和解析)
Everybody hates rats. But in the earthquake places of the world – Japan, Los Angeles, Turkey – rats will soon be man’s new best friends.
What happens after an earthquake? We send in rescue(救援) dogs. Why? Because they can smell people. Dogs save lives. They help rescuers to find living people. But dogs are big and they can’t get into small spaces. So now a new research project is using a smaller animal to save lives: the rat.
How does it work? First, the rat is trained to smell people. When this happens, the rat’s brain gives a signal. This is sent to a small radio on its back, and then the rescuers follow the radio signals. When the rat’s brain activity jumps, the rescuers know that someone is alive. The rat has smelled that person.
Although there are already robots which can do this job, rats are better. Christian Linster at Cornell University, New York, says, “ ‘Robot’ noses don’t work well when there are other smells around. Rats are good at that.” Rats can also see in the dark. They are cheaper and quicker to train than dogs, and unlike robots, they don’t need electricity.
The “ rat project” is not finished, but Julie Ryan of International Rescue Corps in Scotland says, “ It would be fantastic. A rat would get into spaces we couldn’t get to and a rat would get out if it wasn’t safe.” Perhaps for the first time in history, people will be happy to see a rat in a building ( but only after an earthquake, of course.)
1.In the earthquake places, rats will become man’s best friends because they can __________.
A. take the place of man in rescue jobs
B. find the positions of people alive who are trapped in buildings
C. serve as food for people alive who are trapped in buildings
D. send signals for the coming earthquake
2.The underlined word “that” in Paragraph 4 refers to(所指) _________
A. treating wounded people.
B. helping rescuers.
C. smelling people among different smells.
D. carry the wounded people to safety.
3.From the third paragraph we know the rescuers can judge a person is alive by ___________.
A. the nose made by the rat
B. the rat’s unusual behavior
C. the signal sent by the radio on the rat’s back
D. the smell given off by the person
4.In doing rescue jobs, __________________________.
A. rats have better sense of smell than dogs.
B. dogs don’t need to be trained to smell people.
C. robots’ sense of smell can be affected by other smells around.
D. rats can see in the dark and are smaller than robots.
5.After reading the passage we can know ______________________________.
A. rats have taken the place of dogs in search for people.
B. the “ rat project” has been completed
C. people are now happy to see a rat in a building
D. now people still use dogs and robots in performing rescue
Everybody hates rats. But in the earthquake places of the world – Japan, Los Angeles, Turkey – rats will soon be man’s new best friends.
What happens after an earthquake? We send in rescue(救援) dogs. Why? Because they can smell people. Dogs save lives. They help rescuers to find living people. But dogs are big and they can’t get into small spaces. So now a new research project is using a smaller animal to save lives: the rat.
How does it work? First, the rat is trained to smell people. When this happens, the rat’s brain gives a signal. This is sent to a small radio on its back, and then the rescuers follow the radio signals. When the rat’s brain activity jumps, the rescuers know that someone is alive. The rat has smelled that person.
Although there are already robots which can do this job, rats are better. Christian Linster at Cornell University, New York, says, “ ‘Robot’ noses don’t work well when there are other smells around. Rats are good at that.” Rats can also see in the dark. They are cheaper and quicker to train than dogs, and unlike robots, they don’t need electricity.
The “ rat project” is not finished, but Julie Ryan of International Rescue Corps in Scotland says, “ It would be fantastic. A rat would get into spaces we couldn’t get to and a rat would get out if it wasn’t safe.” Perhaps for the first time in history, people will be happy to see a rat in a building ( but only after an earthquake, of course.)
【小题1】In the earthquake places, rats will become man’s best friends because they can __________.
| A．take the place of man in rescue jobs |
| B．find the positions of people alive who are trapped in buildings |
| C．serve as food for people alive who are trapped in buildings |
| D．send signals for the coming earthquake |
| A．treating wounded people. |
| B．helping rescuers. |
| C．smelling people among different smells. |
| D．carry the wounded people to safety. |
| A．the nose made by the rat |
| B．the rat’s unusual behavior |
| C．the signal sent by the radio on the rat’s back |
| D．the smell given off by the person |
| A．rats have better sense of smell than dogs. |
| B．dogs don’t need to be trained to smell people. |
| C．robots’ sense of smell can be affected by other smells around. |
| D．rats can see in the dark and are smaller than robots. |
| A．rats have taken the place of dogs in search for people. |
| B．the “ rat project” has been completed |
| C．people are now happy to see a rat in a building |
| D．now people still use dogs and robots in performing rescue |
Growing mushrooms（蘑菇）is probably the easiest thing you can do even if you are new to mushroom growing. It is becoming more common because restaurants are starting to create more dishes that include mushrooms.
Mushroom growing is easy. To start, you need to have a space where you are going to grow these mushrooms. It does not have to be a huge space but just enough for you to grow as many mushrooms as you need. When you have found the space perfect for you, you can start researching what kind of mushrooms you want to grow. There are a lot of mushrooms to choose from and not all of them are suitable to eat.
When you decide what kind of mushrooms you want to grow, you can start getting ready to plant the mushrooms. Sometimes you may want to hire some workers to help if you have a large mushroom farm, or if you are trying to start a professional mushroom growing business. Trying to have a business by yourself can be stressful. If you don’t have enough time to spend taking care of everything yourself, some helpers may be the best choice.
After you have started the mushroom growing, you should regularly check that your mushrooms grow properly and that they are not being attacked by any pesticides（农药）or any other animals or something that could be dangerous to them. That is the worst part of mushroom developing. Protect your mushroom farm well with a fence（围栏）or a gate so that only you and your workers can get in and out.
Mushroom growing is not difficult and it is easy to get stared in the world of farming. You will soon possibly be able to provide some of the great cooks of the world with high quality mushrooms that will be enjoyed by thousands of people all over the world.
1.According to the passage, many people begin to plant mushrooms probably _________.
A．because they are in great need. B．because they look very beautiful
C．because they are healthy food D．because they are very expensive
2.Which of the following is the right order of planting mushrooms?
a. Choose suitable mushrooms. b. Protect your mushrooms well.
c. Find some workers to help you. d. Start to grow the mushrooms.
e. Find a place to plant your mushrooms.
A．c—a—d—b—e B．e—a—c—d—b C．c—a—e—b—d D．e—a—d—b—c
3.It can be inferred（推断）from the passage that __________.
A．pesticides can be used in mushroom growing
B．anyone can produce high quality mushrooms.
C．after starting, you should always take care of the mushrooms
D．having a mushroom business is not so difficult
4.According to the passage, which sentence is NOT true?
A．Although you don’t know much about growing mushrooms, you can do it easily.
B．you can choose a suitable space, just big enough for you to grow mushrooms.
C．All mushrooms aren’t suitable to eat.
D．The worst part of mushroom developing is to protect your mushrooms farm well with fence.
5.The best title of the passage is __________.
A．Healthy mushrooms B．The value of mushrooms
C．How to choose mushrooms D．Suggestions on growing mushrooms
Always forgetting your long passwords(密码)? Worried about being hacked(被攻击)?All these worries will soon become history. Scientists have found that upper-casing(大写)your password can help you reduce the chance being hacked.
Usually passwords are six letters or more.However,50 percent of people choose a common word or simple key combination for their password. The most used passwords are 123456, abcdef and abc123. In fact, if your passwords are in lower-case(小写),it will be easily hacked by a hacker. According to a study, it only takes a hacker ten minutes to hack a six-letter password which is in lower-case, but if you make the letter in upper-case, it can take up to ten hours. So if you want to make your account much safer, you should make your password upper-case. Of course, you can also add numbers or symbols to your password. Most of the time a hacker’s computer has to work for 18 days to break a password, but if you choose a nine-letter password that includes numbers and symbols, it can take a hacher’s computer 44,530 years to break it.
【小题1】Scientists have found that your password is much safer for
your account.
| A．upper-casing | B．lower-casing |
| C．reducing | D．copying |
| A．123456 | B．abcdef | C．abc123 | D．000000 |
| A．10 minutes | B．10 hours |
| C．18 days | D．44,530 years |
| A．What passwords are. |
| B．How a password is hacked. |
| C．How to make your password much safer. |
| D．Why hackers hack your password. |
Throughout history, people have been interested in knowing how language first began, but no one knows exactly where or how this happened. However, we do know a lot about languages, the language of today and also the languages of earlier times. There are probably about three thousand languages in the world today. Chinese is the language with the most speakers. English, Russian and Spanish are also spoken by millions of people. On the other hand, some languages in the world have less than one hundred speakers.
There are several important families of languages in the world. For example, most of the languages of Europe are in one large family called Indo-European. The original language of this family was spoken about 4,500 years ago. Many of the present-day languages of Europe and India are modern forms of the language of 4,500 years ago.
Languages are always changing. The English of today is very different from the English of 500 years ago. In time, some even die out completely. About 1,000 years ago, English was a little known relative of German spoken on one of the borders of Europe.
If a language has a number of speakers, or if it is very old, there may be differences in the way it is spoken in different areas. That is, the language may have several dialects. Chinese is a good example of dialect differences. Chinese has been spoken for thousands of years by many millions of people. The differences between the dialects of Chinese are so great that speakers of Chinese from some parts of China can’t understand speakers from other parts.
【小题1】The first paragraph mainly tells us that_______.
| A．most people in the world speak Chinese |
| B．there are thousands of languages in today’s world |
| C．man has much knowledge about languages |
| D．some people know several languages |
| A．will soon die out completely |
| B．were once a relative of English |
| C．are no longer spoken |
| D．come from the same family of language. |
| A．Chinese is the language with the most speakers. |
| B．English was a well-known relative of German spoken on one of the borders of Europe. |
| C．A language has many speakers, but there may be no differences in the way it is spoken in different areas. |
| D．Speakers of Chinese from some parts of China can understand speakers from other parts. |
| A．there are great differences between the dialects of Chinese |
| B．Chinese and many foreign languages are not of the same family |
| C．Chinese is a very old language |
| D．there are great differences between the old Chinese and the present-day Chinese |
| A．a special language spoken by Chinese |
| B．the sign used by Chinese people in a special area |
| C．the difference between the old and today’s Chinese |
| D．the form of a language used in one part of the country |
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