From the health point of view we are living in a wonderful age. A large number of once fatal illnesses can now be cured by modern drugs and surgery. But though the possibility of living a long and happy life is greater than ever before, every day we witness the incredible killing of people on the roads. Man is opposite to the motor-car! It is a never ending battle which man is losing. Thousands of people are killed each year and we are quietly sitting back and letting it happen.

It has been rightly said that when a man is sitting behind a steering-wheel(方向盘) , his car becomes the extension of his personality. There is no doubt that the motor-car often brings out a man's worst qualities. People who are normally quiet and pleasant may become unrecognizable when they are behind a steering-wheel. They are rude, ill-mannered and aggressive. All their hidden frustrations and disappointments seem to be brought to the surface by the act of driving.

The surprising thing is that society smiles on the motorist and seems to forgive the behaviour. Everything is done for his convenience. Cities and towns are made ugly by huge car parks.

It is high time a world law were created to reduce this senseless waste of human life. With regard to driving, the laws of some countries are not strict and even the strictest are not strict enough. A law which was universally accepted could only have a beneficial effect on the accident rate. Here are a few examples of some things that might be done. The driving test should be made to a fixed standard and far more difficult than it is; all the drivers should be made to take a test every three years or so; the age at which young people are allowed to drive any vehicle should be raised to at least 21 ; all vehicles should be put through strict annual tests for safety. Present drinking and driving laws (where they exist) should be mad much stricter. Driving speed should be limited on all roads. These measures may sound extremely severe. But surely nothing should be considered difficult if it results in reducing the annual toll of human life. After all, the world is for human beings, not motor-cars.

1.The main idea of this passage is______.

A. traffic accidents are mainly caused by motorists

B. thousands of people in the world are killed each year

C. only stricter traffic laws can prevent accidents

D. the laws of some countries about driving are too strict

2. Which of the following is right according to the passage?

A. It is right to build huge car parks in cities and towns.

B. all the drivers must be asked to take a test every year.

C. Working by car can save time and money.

D. Society overlooks their rude driving.

3.Why does the author say" his car becomes the extension of his personality" ?

A. Driving can show his real self.

B. Driving can bring out his good character.

C. Driving can make a man excited and joyful.

D. Driving can make a man quiet and pleasant.

4.The attitude of the author is______.

A. approving B. critical

C. sympathetic D. aggressive

 

A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech integrated systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.

“It’s extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components (元件),” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing together the components. “The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own,” he said.

They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of interdependencies on the individual components, each of which individually has to perform well, but then has to be matched well to everything it’s connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.

While this first robotic flyer is linked to a small, off-board power source, the goal is eventually to equip it with a built-in power source, so that it might someday perform data-gathering work at rescue sites, in farmers’ fields or on the battlefield. “Basically it should be able to take off, land and fly around,” he said.

Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”

1.The robotic fly project has been conducted __________.

A. just by accident

B. within a decade

C. just by a professor

D. for more than ten years

2.The difficulty the team of engineers met with while making the robotic fly was that __________.

A. they had no model in their mind

B. they did not have sufficient time

C. they had no ready-made components

D. they could not assemble the components

3.Which of the following can be learned from the passage?

A. The robotic flyer is designed to learn about insects.

B. Animals are not allowed in biological experiments.

C. There used to be few ways to study how insects fly.

D. Wood’s design can replace animals in some experiments.

4.Which of the following might be the best title of the passage?

A. Father of Robotic Fly

B. Inspiration from Engineering Science

C. Robotic Fly Imitates Real Life Insect

D. Harvard Breaks Through in Insect Study

 

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