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Everything we see has the color. We see green grass and red apples. How can we see colors? We see colors when light hits our eyes. Dogs and any other animals can't see colors. But bees can. They even see colors we don't see. This helps them find flowers to fly to.
We sometimes use the names of colors to say things. People may say "see red "when they are angry.
Or you may say you "feel blue". This means you are sad. We use colors to tell us things, too. Red means to stop. Green means to go.
Some people can't tell one color from another. They can see yellow and blue. But they can't tell red
from green. We say these people are color blind(色盲).
B. Sea
C. Color
D. Beautiful World
B. the function of color
C. the color of the sea
D. the color of the sky
B. how we see color
C. why apples are red
D. why grass is green
B. why people see colors
C. why people feel blue
D. people like the red and blue color
B. color blindness
C. people and colors
D. red and green colors
In nature, you may see many insects (昆虫）and animals of different colors. Have you ever wondered why?
Locusts are super delicious food for birds,but it is not always an easy job for birds to catch them.It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops(庄稼). When crops are young,locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do.
Brown bears,tigers and other animals move quietly through forests. They can’t be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil(土壤） in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive,they have to hide themselves in the daytime and appear only at night.
Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over , its enemies will find themselves suddenly in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.
1.It is not easy for birds to catch locusts because____________.
A .locusts are good runners B. locusts can jump very high
C. locusts are smarter than birds D. locusts can change their color
2.According to the passage, most soil insects_________
A.do not have bright colors
B. change their colors with the soil
C. do not live in a dark and wet environment
D. Eat colorful insects like butterflies and bees
3.What’s the meaning of the underlined word”survive” in the passage?
A. 繁殖 B. 产卵 C. 觅食 D. 生存
4.The ink fish_______so that its enemies will not see it?
A. changes its color B. makes the water around it black
C. appears only at night D. hides itself in the sea rocks
5.What is the main idea of this passage?
A. Some insects and animals have different skills.
B. Some insects and animals are clever than we think.
C. Some insects and animals use colors to protect themselves.
D. Some insects and animals can get used to the environment easily.
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Locusts are super delicious food for birds,but it is not always an easy job for birds to catch them.It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops(庄稼). When crops are young,locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do.
Brown bears,tigers and other animals move quietly through forests. They can’t be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil(土壤） in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive,they have to hide themselves in the daytime and appear only at night.
Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over , its enemies will find themselves suddenly in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.
小题1:It is not easy for birds to catch locusts because____________.
| A．locusts are good runners | B．locusts can jump very high |
| C．locusts are smarter than birds | D．locusts can change their color |
| A．do not have bright colors |
| B．change their colors with the soil |
| C．do not live in a dark and wet environment |
| D．Eat colorful insects like butterflies and bees |
| A．繁殖 | B．产卵 | C．觅食 | D．生存 |
| A．changes its color | B．makes the water around it black |
| C．appears only at night | D．hides itself in the sea rocks |
| A．Some insects and animals have different skills. |
| B．Some insects and animals are clever than we think. |
| C．Some insects and animals use colors to protect themselves. |
| D．Some insects and animals can get used to the environment easily. |
In nature, you may see many insects (昆虫）and animals of different colors. Have you ever wondered why?
Locusts are super delicious food for birds,but it is not always an easy job for birds to catch them.It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops(庄稼). When crops are young,locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do.
Brown bears,tigers and other animals move quietly through forests. They can’t be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil(土壤） in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive,they have to hide themselves in the daytime and appear only at night.
Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over , its enemies will find themselves suddenly in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all
- 1.
It is not easy for birds to catch locusts because____________
- A.locusts are good runners
- B.locusts can jump very high
- C.locusts are smarter than birds
- D.locusts can change their color
- A.
- 2.
According to the passage, most soil insects_________
- A.do not have bright colors
- B.change their colors with the soil
- C.do not live in a dark and wet environment
- D.Eat colorful insects like butterflies and bees
- A.
- 3.
What’s the meaning of the underlined word”survive” in the passage?
- A.繁殖
- B.产卵
- C.觅食
- D.生存
- A.
- 4.
The ink fish_______so that its enemies will not see it?
- A.changes its color
- B.makes the water around it black
- C.appears only at night
- D.hides itself in the sea rocks
- A.
- 5.
What is the main idea of this passage?
- A.Some insects and animals have different skills
- B.Some insects and animals are clever than we think
- C.Some insects and animals use colors to protect themselves
- D.Some insects and animals can get used to the environment easily
- A.