题目内容
| 词语填空:选择所给单词完成短文。 | |
| |
| Which animal do we need 1. , dogs, horses, pigs? No! The 2. to the question is cows. Why cows? Cows give us milk. And milk is one of 3. most important 4. of food. Suppose (假设) that all the milk cows make in one year were put 5. bottles. And suppose these bottles were put side by side. The line of bottles would go all around the world 400 6. . That is a lot of milk, less than half of which is used for 7. and cooking. Most of it is used to make butter, cheese, ice cream and many other things. It takes many cows to give us that 8. milk. But not as many as it used to, a cow used to give only about 1500 quarts (夸脱) of milk a year. Now a fine cow may 9. more than 3000 quarts in a year. Why 10. cows give more today? Now farmers have better cows. The cows get better care and better food. |
| 1. most 2. answer 3. our 4. kinds 5. into 6. times 7. drinking 8. much 9. give 10. do |
练习册系列答案
相关题目
| 完形填空。 | ||||
| Some people think that all wild animals are dangerous. But in fact, very few of them will 1 a man if he leaves them alone. If you meet a lion or an elephant, I guess you will 2 ; but even a lion will avoid (躲避) a man if it is not very 3 . Lions and tigers only kill and eat men when they have grown too old and too weak to catch their usual 4 , such as deer and 5 small animals. If you see a wild elephant, perhaps you will be 6 . However, elephants usually run away at once if you don't attack them. Some animals get very frightened if they only smell a man, some stand and look at him for a moment 7 they run away, some take no notice at all but walk away 8 in another direction. Wild animals only attack 9 when they are afraid that people want to harm their 10 , or when the hunters shoot at them and make them angry. | ||||
|
2. Gravity ______.
[ ]
A. pulls on everything high up
B. is everywhere
C. can be seen everywhere
D. pushes on everything
B. is everywhere
C. can be seen everywhere
D. pushes on everything
3. You can't lift up a big stone because ______.
[ ]
A. more gravity pulls it down
B. you don't know how to do it
C. you are not strong
D. gravity is out of the stone
B. you don't know how to do it
C. you are not strong
D. gravity is out of the stone
4. If you weigh 50 kilograms, that means ______.
[ ]
A. you can lift up 50 kilograms of things
B. the earth's gravity on you is less than 50 kilograms
C. you can lift up more than 50 kilograms of things
D. the earth's gravity on you is 50 kilograms
B. the earth's gravity on you is less than 50 kilograms
C. you can lift up more than 50 kilograms of things
D. the earth's gravity on you is 50 kilograms
5. If a stone weighs four kilograms on the moon, it weighs .
[ ]
A. 10
B. 24
C. 40
D. 60
B. 24
C. 40
D. 60