题目内容
Do you know why different animals or insects have their special colors? Colors are used mainly to protect themselves.
Why can’t some birds easily catch locusts（蝗虫）? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as autumn comes, locusts change to the same brown color as crops have. Some other insects with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives in the day and appear only at night.
If you study the animal life, you’ll find the main use of coloring is to protect themselves. Bears, lions and other animals can’t be easily seen by hunters. This is because they have the colors much like the trees.
Have you ever noticed an even more strange thing? A kind of fish in the sea can send out black liquid when it faces danger. While the liquid spreads over, its enemies can’t find it. And it quickly swims away. So it has lived up to now though it is not strong at all.
1. From the article we learn that locusts .
A. are dangerous to their enemies B. are easily found by birds
C. change their colors to protect themselves D. are small animals
2.How can insects with different colors from plants keep out of danger?
A. They have to move quietly.
B. They hide themselves in the day and appear at night.
C. They have the colors much like their enemies.
D. They run away quickly.
3. Bears and lions can keep safe because .
A. they live in forests B. they like brown and grey colors
C. they move quietly D. they have the colors similar to the trees
4.What does the word “liquid” mean in the last paragraph?
A. 气体 B. 固体 C. 液体 D. 水蒸气
5. Which is the best title for this passage?
A. The Main Use of Colors for Animals and Insects
B. Colors of Different Animals and Insects
C. The Change of Colors for Animals and Insects
D. The Change of Different Animals and Plants
1.C2.B3.D4.C5.C
【解析】略
小学教材完全解读系列答案Long, long ago there was a very foolish thief. Do you know what he did one day? When he wanted to steal (偷) the bell on his neighbor’s door, he walked up to the door, took hold of (抓住) the bell and pulled hard. The bell made a very loud noise. The thief was afraid and went home.
Then he sat down to think, “I must do something about the noise,” he said. He thought and thought. At last he had an idea. “Ah, I’ll put some cotton in my ears. Then I won’t be able to hear the noise.” The next day he went to the door of his neighbor, and took hold of the bell. This time he pulled even harder. The bell rang loudly, but the thief did not hear anything. With another hard pull he got the bell out. Just then the neighbor came running out. “Steal my bell? I’ll teach you a lesson (教训),”the angry man shouted. And he hit the thief on the nose.
The foolish thief did not know how the neighbor found out he was stealing the bell. “Why did he come out just then?” he wondered (感到疑惑).
【小题1】The thief was trying to get .
| A．his neighbor | B．his neighbor’s doorbell |
| C．some cotton | D．a door with a bell on it |
| A．safe | B．difficult | C．dangerous | D．easy |
| A．he knew his doorbell was being stolen |
| B．he thought someone was eager (渴望的) to visit him |
| C．He realized (意识到) something strange happened |
| D．Both B and C |
| A．give him lessons | B．punish (惩罚) him for stealing |
| C．help him with the bell | D．be his teacher |
| A．The thief understood why he was hit on the nose. |
| B．The thief knew why the neighbor came out. |
| C．The thief thought the neighbor could not hear the bell. |
| D．The thief didn’t want to know why the neighbor ran out just at the time he stole the doorbell. |