-
The sun gives energy and the earth receives the sun’s energy. The way the earth interacts with the sun’s energy can be displayed in a picture called the earth’s energy budget（预算）. It displays the sun’s energy that reaches us and how much of that energy is taken in and how much is thrown back by the earth and its air. Once the energy reaches the earth, some of it is taken by land and oceans. The amount of energy that is taken in influences the temperatures. The energy that is not taken in is thrown back to space.
Generally, the amount of energy coming in is equal to the amount of energy going out. So, we say the earth’s energy budget is balanced. If more energy was coming in than was going out, the earth’s temperature would increase. On the other hand, if too much energy is thrown back, and not taken in, we would see the earth’s temperature dropping.
Of all of the sun’s energy that hits the earth, about 67% is taken in by the land, oceans, air and clouds and about 33% is thrown back into space. 
1.The picture above shows us how ________ hits the earth.
A. the high temperature B. the heavy rain C. the sun’s energy
2.In the 2nd paragraph, the underlined phrase “equal to ” means “______”.
A. less than B. the same as C. more than
3.Picture ______ shows us the main idea of the last paragraph.
A. B. C.
4.If too much energy is thrown back, we will feel ______on the earth.
A. cold B. hot C. warm
5.The amount of energy that is _______ influences the temperatures.
A. well balanced
B. thrown back
C. taken in
-
Our teacher told us that the sun ______ the earth light.
A.gave B.will give
C.has given D.gives
-
Our teacher told us that the sun ______ the earth light.
A. gave B. will give
C. has given D. gives
-
The earth moves around the sun, and the moon moves around the earth. When our part of the earth turns to the moon, it is night. The sun is much bigger than the moon. But sometimes the moon looks bigger than the sun, because it’s much nearer to the earth.
The sun is very bright. It gives a very strong light. The moon looks quite bright, too. But it doesn’t give any light at all. The moon looks much bigger and brighter than the stars. But actually the stars are much bigger and brighter than the moon. They look smaller than the moon because they’re much farther away from us.
1. ____moves around________.
A. The earth; the moon B. The moon; the earth C. The moon; the stars
2.Sometimes the moon looks bigger than the sun, because_________.
A. it is much bigger than the sun B. it comes out only at night
C. it is much nearer to the earth than the sun
3.The sun_______________.
A. is very bright, and it gives a very strong light
B. isn’t bright, but it gives a very strong light
C. is very big, but it doesn’t give any light at all
4.The stars______________.
A. look much bigger than the moon
B. are much farther away from us than the moon
C. are a lot brighter than the moon, but they are not bigger than the moon
-
（2016江苏盐城）All living things need energy to live and grow. This energy comes first from the sun. Plants use water and sunlight to make their own food. Animals can not make their own food, and they eat plants. Other animals then eat the plant eaters.
A food chain shows what eats what. It might show that zebras eat grass and then lions eat zebras.
Lions also eat other animals. Zebras eat other kinds of plants. So it takes more than one food chain to show how lions and zebras get their energy.
A food web shows how food chains work together. From it we can see how energy moves from plants to animals.
Plants and animals that live in hot, dry deserts depend on water as well as food. Creosote bushes have small leaves that hold water. Their seeds provide food and water for kangaroo rats. Kangaroo rats don’t need to drink water. They get all the water they need from the plants they eat. Kangaroo rats keep cool by coming out only at night to look for food. Ringtail cats also come out only at night. Ringtail cats hunt and eat kangaroo rats. Coyotes eat both the kangaroo rats and the ringtail cats.
Nothing is wasted in a food wed. Vultures eat dead animals. Vultures are scavengers. Scavengers do not hunt and kill other animals to get food. They eat animals that are already dead. When a ringtail cat or a coyote dies, it makes a meal for the vultures. Scavengers do an important job in keeping the environment clean.
1.Where does the energy that living things need first come from?
A. Animals. B. Plants. C. The sun. D. Plant eaters.
2.Why do ringtail cats come out only at night?
A. Because they are afraid of coyotes. B. Because they are shy animals.
C. Because it is very hot in the daytime. D. Because they can eat kangaroo rats.
3.What kind of animal can be placed in the empty box of the picture?
A. Kangaroo. B. Vulture. C. Cat. D. Zebra.
4.Which of the following is NOT TRUE according to the passage?
A. Lions eat different kinds of animals. B. Plants are on the top of the food chain.
C. Scavengers can keep the environment clean. D. Some animals get water from the plants they eat.
5.What’s the best title of the passage?
A. Web of life B. Things that we eat
C. Food in the desert D. The place where food is from
-
The energy from the sun and wind is very cheap and it will never .
A. come out B. put out
C. carry out D. run out
-
The ________ from the sun and wind is very cheap and it will never run out.
A. energy B. noise C. heat D. light
-
The energy from the sun and wind is very cheap and it will never ________.
A.run out B.put out C.work out D.carry out
-
The energy from the sun and wind is very cheap and it will never ____________.
A. come out B. put out
C. carry out D. run out
-
The energy from the sun and wind is very cheap and it will never ____________.
A. come out B. put out C. carry out D. run out