更多"In the dark night of the desert, a "的相关试题:
[单项选择]In the dark night of the desert, a group of US Air Force scientists is testing a new device for a missile to target. Designed to seek out the heat of an enemy aircraft engine, it is now going through its paces by tracing the movement of a flashlight waving thirty feet away in the darkness. A hundred yards away, unseen by the man, a rattlesnake sliding between the stones senses a patch of warmth. Although the snake’s mechanism is small enough to be packed into a head the size of a nut, it can detect a change in temperature of one-thousandth of a degree. With a sound the snake closes in and strikes for the kill.
Whenever we look in the animal world we find the same story. Almost anything that man can do, nature has already done better. So, it is for the purpose of learning from nature that a new science called bionics has grown up. Its aim is to find out how animal’s instruments work so that man can copy them for his own purpose.
Imagine being able to know a friend several mile
A. locating underground streams.
B. making smooth cloth.
C. detecting poisonous gas.
D. communicatin
[单项选择]
The air surrounding us is important to everyone. Without air, we could not exist. Everyone understands that. But air is necessary in many other ways — ways that are not always so obvious or widely known.
If we did not have air, there would be no sound. Sound travels through air. Where there is no air, there is no sound. Without air there would be no fire. There would be no automobiles, since motors need air in order to operate.
Without air, there would be no wind or clouds. The night time would be very cold and the days very hot. We would be forced to seek shelter from the sun, as there would be no atmosphere to protect us from the sun’s deadly rays.
In this huge ocean of air surrounding the earth, there is more energy than in all the coal, oil and gas we have on the earth. Electrical energy is collected in the atmosphere as water is collected and stored in a dam (大坝). The existence of electricity in the air has been known for centuries
A. air is important to human being
B. air is important to the earth
C. air is necessary in many other ways
D. air is necessary to the animals
[单项选择]
Air is all around us. It is around us
when we walk and play. From the moment we are born, air surrounds us. When we
sit down, it is around us. When we go to bed, air is also around us. No matter
where we are on earth, air surrounds us. We live in air. All
living things need air. Living things cannot live without air. We can go without
food or water for a few days, but we cannot live for more than a few minutes
without air. When we are working or running, we need more air. So we breathe
faster than usual. When we are asleep, we need less
air. |
People can live without food or water for______.
[单项选择]Air is all around us. It is around us when we walk and play. From the moment we are born, air surrounds us. When we sit down, it is around us. When we go to bed, air is also around us. No matter where we are on earth, air surrounds us. We live in air.
All living things need air. Living things cannot live without air. We can go without food or water for a few days, but we cannot live for more than a few minutes without air. When we are working or running, we need more air. So we breathe faster than usual. When we are asleep, we need less air.
People can live without food or water for______.
A. a few months
B. a few weeks
C. a few days
[多项选择]Last week, a group of us students, who are ready to leave the campus and face the real world, talked about an issue: What kind of jobs we should take, part-time (on-the-side) extemporaneous jobs or stable fulltime jobs Some think that the former best suit them while others maintain that the latter render them more benefits. What is your opinion Write an essay of about 400 words to state your opinion.
In the first part of your writing you should state clearly your main argument, and in the second part you should support your argument with appropriate details. In the last part you should bring what you have written to a natural conclusion or make a summary.
You should supply an appropriate title for your essay.
Marks will be awarded for content, organization, language and appropriateness. Failure to follow the above instructions may result in a loss of marks.
Write your essay on ANSWER SHEET FOUR.