更多"Air is all around us. It is around "的相关试题:
[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.
When we are sleeping we______.
A. need less air
B. need more air
C. don’t need air at all
[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]Marketing is all around us. We are surrounded by businesses, like Apple Computer Inc., that carry good products grown or manufactured and prepared for sale. We also see many businesses that offer services, benefits or satisfactions that improve the personal appearance, health, comfort, or peace of mind of their users. Some products are used to make services available, such as the tools an auto-mechanic uses in servicing a car.
Marketing starts with people. Marketing businesses find out what customers want and work to supply those goods and services.
Getting products from farms and factories to the people who will use them involves marketing at each step. Suppose a farmer recognizes the need for popcorn and decides to grow some. When the popcorn is harvested and ready for marketing, it may go to one of many places, depending on whether it is to be stored or used right away. Marketing occurs at each step: when the farmer sells it, for example, to a storage warehouse and when th
A. Growing products on farm.
B. Finding out what customers want.
C. Supplying goods and service to customers.
D. Manufacturing products in factories.
[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
