Using his hybrid rice, farmers are producing harvests before.A．as twice large asB．twice large thanC．larger than twiceD．twice as large as 题目和参考答案——青夏教育精英家教网—

题目内容

Using his hybrid rice, farmers are producing harvests before.

A．as twice large as	B．twice large than
C．larger than twice	D．twice as large as

解析

练习册系列答案

相关题目

Since the 1970s, scientists have been searching for ways to link the brain with computers. Brain-computer interface(BCI) technology could help people with disabilities send commands to machines.
Recently, two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic school in Lausanne, Switzerland, demonstrated（展示）a small robotic wheelchair directed by a person’s thoughts.
In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right band. He could even talk as he watched the vehicle and guided it with his thoughts.
“our brain has billions of nerve ceils. These send signals through the spinal cord （脊髓）to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles,” Tavella says. “Our system allows disabled people to communicate with external world and also to control devices.”
The researchers designed a special cap for the user. This head cover picks up the signals from the scalp(头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.
Prof. Millan, the team leader, says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. One example is this wheelchair.”
He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can benefit frotn. And the other is to guarantee that they can use the technology over long periods of time.
【小题1】
BCI is a technology that can

A．help to update computer systems	B．link the human brain with computers
C．help the disabled to recover	D．control a person's thoughts

【小题2】
How" did Tavella operate the wheelchair in the laboratory?

A．By controlling his muscles.	B．By talking to the machine.
C．By moving his hand.	D．By using his mind.

【小题3】
Which of the following shows the path of the signals described in Paragraph 5?

A．scalp→computer→cap→wheelchair

B．computer→cap→scalp→wheelchair

C．scalp→cap→computer→wheelchair

D．cap→computer→scalp→wheelchair

【小题4】
The team will test with real patients to

A．make profits from them	B．prove the technology useful to them
C．make them live longer	D．learn about their physical condition

【小题5】
Which of the following would be the best title for the text?

A．Switzerland, the BCI Research Center

B．New Findings About How the Human Brain Works

C．BCI Could Mean More Freedom for the Disabled

D．Robotic Vehicles Could Help to Cure Brain Injuries

Three Boys and a Dad
Brad closed the door slowly as Sue left home to visit her mother. Expecting a whole day to relax, he was thinking whether to read the newspaper or watch his favorite TV talk show on his first day off in months. “This will be like a walk in the park,” he’d told his wife. “I’ll look after the kids, and you can go visit your mom.”
Things started well, but just after eight o’clock, his three little “good kids”—Mike, Randy, and Alex—came down the stairs in their night clothes and shouted “breakfast, daddy.” When food had not appeared within thirty seconds, Randy began using his spoon on Alex’s head as if it were a drum. Alex started to shout loudly in time to the beat（节拍）. Mike chanted “Where’s my toast, where’s my toast” in the background. Brad realized his newspaper would have to wait for a few seconds.
Life became worse after breakfast. Mike wore Randy’s underwear on his head. Randy locked himself in the bathroom, while Alex shouted again because he was going to wet his pants. Nobody could find clean socks, although they were before their very eyes. Someone named “Not Me” had spilled a whole glass of orange juice into the basket of clean clothes. Brad knew the talk show had already started.
By ten o’clock, things were out of control. Alex was wondering why the fish in the jar refused his bread and butter. Mike was trying to show off his talent by decorating the kitchen wall with his color pencils. Randy, thankfully, appeared to be reading quietly in the family room，but closer examination showed that he was eating apple jam straight from the bottle with his hands. Brad realized that the talk show was over and reading would be impossible.
At exactly 11:17, Brad called the daycare centre (日托所）.“I suddenly have to go into work and my wife’s away. Can I bring the boys over in a few minutes?” The answer was obviously “yes” because Brad was smiling.
【小题1】When his wife left home. Brad expected to .

A．go out for a walk in the park

B．watch TV talk show with his children

C．enjoy his first day off work

D．read the newspaper to his children

【小题2】Which of the following did Randy do?

A．Drawing on the wall	B．Eating apple jam
C．Feeding the fish.	D．Reading in a room

【小题3】Why did Brad ask the daycare centre for help?

A．Because he wanted to clean up his house.

B．Because he suddenly had to go to his office

C．Because he found it hard to manage his boys home.

D．Because he had to take his wife back

【小题4】This text is developed .

Have you ever wished that you could make your little sister’s teddy bear talk to her? Or have you ever wanted to bring a puppet (木偶) to life? If so, you may be interested in learning the art of ventriloquism (腹语术). A ventriloquist can make an ordinary object seem to be alive by giving it a personality, movement, and speech.

Your object can be a puppet, or a doll. Give your new “friend” a name, and then decide on the personality that he will have. The next step is to give your friend movements that agree with the personality you have chosen.

Now you can learn to make your “friend” talk. A ventriloquist will control his mouth and lips so that it will appear that his voice is coming from the object he is using. This will take practice, but you can do it.

First, decide on a voice that is different from your own. It could be higher or lower than yours, or could even have a special accent. Then, find a clean teaspoon and hold the handle between your front teeth. Now, using the voice you created for your friend and holding the handle of the teaspoon tightly between your teeth, look into a mirror and talk. Practicing with the spoon in your mouth will help you learn to keep your mouth from moving. Now try telling a joke in your normal voice and have your friend speak in his voice. Practice those words until you can say them without your lips moving at all.

Ventriloquism is fun. It also requires hard work to become good at it. The most important thing to do is practice. But if you are willing to take the time to give your friend an interesting personality, to practice lively movements, and to work on good mouth control, then you will be well on your way to becoming a ventriloquist!

1.According to the text, a ventriloquist .

A. is a person who can make puppets

B. needs to work with another person

C. can speak without using his mouth

D. can make an object seem to speak

2.You need to hold the handle of a teaspoon between your front teeth so that .

A. your voice will change

B. your mouth won’t move

C. you can look humorous

D. you can feel your mouth’s movements

3.If you want to be good at ventriloquism, you .

A. need to spend much time practicing

B. must learn from famous ventriloquists

C. should learn at least one special accent

D. must have a great doll to practice with

4.What would be the best title for the text?

A. How to tell jokes

B. How to make puppets

C. Secrets of ventriloquism

D. Tips on making friends

Since the 1970s, scientists have been searching for ways to link the brain with computers. Brain-computer interface(BCI) technology could help people with disabilities send commands to machines.

Recently, two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic school in Lausanne, Switzerland, demonstrated（展示）a small robotic wheelchair directed by a person’s thoughts.

In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right band. He could even talk as he watched the vehicle and guided it with his thoughts.

“our brain has billions of nerve ceils. These send signals through the spinal cord （脊髓）to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles,” Tavella says. “Our system allows disabled people to communicate with external world and also to control devices.”

The researchers designed a special cap for the user. This head cover picks up the signals from the scalp(头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.

Prof. Millan, the team leader, says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories: communication, and controlling devices. One example is this wheelchair.”

He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can benefit frotn. And the other is to guarantee that they can use the technology over long periods of time.

BCI is a technology that can

A. help to update computer systems B. link the human brain with computers

C. help the disabled to recover D. control a person's thoughts

How" did Tavella operate the wheelchair in the laboratory?

A. By controlling his muscles. B. By talking to the machine.

C. By moving his hand. D. By using his mind.

Which of the following shows the path of the signals described in Paragraph 5?

A. scalp→computer→cap→wheelchair

B. computer→cap→scalp→wheelchair

C. scalp→cap→computer→wheelchair

D. cap→computer→scalp→wheelchair

The team will test with real patients to

A. make profits from them B. prove the technology useful to them

C. make them live longer D. learn about their physical condition

Which of the following would be the best title for the text?

A. Switzerland, the BCI Research Center

B. New Findings About How the Human Brain Works

C. BCI Could Mean More Freedom for the Disabled

D. Robotic Vehicles Could Help to Cure Brain Injuries

To be a good teacher, you need some of the gifts of a good actor; you must be able to hold the attention and interest of your audience; you must be a clear speaker, with a good, strong, pleasing voice which is fully under your control; and you must be able to act what you are teaching, in order to make its meaning clear.

Watch a good teacher, and you will see that he does not sit still before his class： he stands the whole time he is teaching; he walks about, using his arms, hands and fingers to help him in his explanations, and his face to express feelings. Listen to him, and you will hear the loudness, the quality (音色) and the musical note of his voice always changing according to what he is talking about.

The fact that a good teacher has some of the gifts of a good actor doesn’t mean that he will indeed be able to act well on the stage, for there are very important differences between the teacher’s work and the actor’s. The actor has to speak words which he has learnt by heart; he has to repeat exactly the same words each time he plays a certain part, even his movements and the ways in which he uses his voice are usually fixed beforehand (预先). What he has to do is to make all these carefully learnt words and actions seem natural on the stage.

A good teacher works in quite a different way. His audience takes an active part in his play: they ask and answer questions, they obey orders, and if they don’t understand something, they say so. The teacher therefore has to meet the needs of his audience, which is his class. He cannot learn his part by heart, but must invent it as he goes along.

I have known many teachers who were fine actors in class but were unable to take part in a stage-play because they could not keep strictly to what another had written.

51. What is the text about ?

A. How to become a good teacher.

B. What a good teacher should do outside the classroom.

C. What teachers and actors could learn from each other.

D. The similarities and differences between a teacher’s work and an actor’s.

52. The word “audience” in the fourth paragraph means ____ .

A. students B. people who watch a play

C. people who not on the stage D. people who listen to something

53. A good teacher ____ .

A. knows how to hold the interest of his students

B. must have a good voice

C. knows how to act on the stage

D. stands or sits still while teaching

54. In what way is a teacher’s work different from an actor’s ?

A. The teacher must learn everything by heart .

B. He knows how to control his voice better than an actor .

C. He has to deal with unexpected situations .

D. He has to use more facial expressions .

55. The main difference between students in class and a theatre audience is that ____.

A. students can move around in the classroom

B. students must keep silent while theatre audience needn’t

C. no memory work is needed for the students

D. the students must take part in their teachers’ plays

试题分类