题目列表(包括答案和解析)
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
用所给词的正确形式填空
1.I’m very (interest) in that (interest) story.
2.You are (suppose) to shake hands when you meet a Chinese friend.
3.A knife is used for (cut) things.
4.The Yellow River is the second (long) river in China.
5.The boy is old enough (dress) himself.
6.December is the (twelve) month in a year.
7.I decided (talk) to my parents about it .
8.We stayed there for a long time without (say) a word.
9.I have five (knife).
阅读理解填词。
Teenagers are always stressed out now．They are often too b 1 to think about their diets and exercise．The truth is, healthy eating, a 2 with regular exercise．Is the only way to k 3 fit．
During your teenage years, it is important to give your body the e 4 it needs．Teenager girls need about 2,200 calories(卡路里)a day and boys need a bit more．Doctors suggest 2,800 calories for teenage boys．50% of your calories should come from rice, bread, v 5 and fruit．You also need to drink a lot of water, six to eight g 6 a day．Enough water will improve your skin and give you healthy hair．
Exercise can help to make you look good, feel good and be healthy．Scientists suggest that teenagers should spend at least 30 minutes e 7 every day．
When you exercise, your body p 8 something．It makes you feel r 9 and energetic．It can even help you sleep better at night and let you pay more a 10 when you study．
Let's eat healthily and take regular exercise．
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
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