Many animals hide to stay alive. They hide in many ways. Some animals hide in leaves; some animals hide in snow. Usually their colors or shapes help protect them. It’s hard to see an Arctic bear in snow. Its white fur helps protect it. Chameleons(变色龙) can hide by changing colors. Their skin turns the same color as what is around them. Some chameleons can change colors in five minutes.

Many animals try to look bigger than they are to stay alive. Some animals can make other animals think they are very big. If they look very big, animals that are looking for food will run away. Bears can walk on two legs. They look very, very scary. Some animals will run away from them.

Many animals try to stay around other animals. This helps them stay alive. Zebras stay close together so that they can help each other look out of danger. Seeing many stripes at once can also confuse animals that want to eat them. Some birds stay in a circle, each toward a different direction. In this way they can also help each other stay alive by looking around for animals that many want to eat one of them.

1.Animals have ways to stay alive. How many of them are mentioned in the passage ?

A. One          B. Two          C. Three       D. Five

2.Why do animals hide ?

A. Because they like to play hide-and-seek.         

B. Because they are shy.

C. Because they want to catch other.       

D. Because they want to protect themselves.

3.How do Chameleons hide ?

A. They change colors.     ?? B. They change shapes.    

C. They hide in snow.    ??? D. They hide in leaves.

4.How do zebras hide ?

A. Become good friends.        ??????????  B. Talk to each other.

C. Help each other look out for danger.       D. Eat and play together

5.Why do animals try to look bigger than they are ?

A. They want other animals to run away from them.   

B. They want other animals to follow them.

C. They want other animals to see them.             

D. They want other animals to like them.

We all enjoy the beautiful show of colours as leaves change each autumn. But did you ever wonder how and why this happens?

Leaves are nature’s food factories. Plants take water from the ground through their roots and take carbon dioxide (二氧化碳) from the air. Plants use sunlight to turn water and carbon dioxide into glucose (葡萄糖). Glucose is a kind of sugar, which plants use as food for energy and growing.

The way plants turn water and carbon dioxide into sugar is called photosynthesis that means “ putting together with light”. A chemical called chlorophyll helps photosynthesis. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.

During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.

As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. Small amounts of these colours have been in the leaves all along. We just can’t see them in the summer, because they are covered up by the green chlorophyll.

The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples (枫树), glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red colour. The brown colour of trees like oaks (橡树) is made from waste left in the leaves.

It is the mixture of all these things that makes the beautiful colours we enjoy during autumn.

1.The word “chlorophyll” in the third paragraph means _______ in Chinese.

A．叶绿素           B．氧气             C．胡萝卜素         D．蛋白质

2.The leaves of the trees in autumn turn yellow because of the short of _____.

A．water and carbon dioxide

B．glucose and energy

C．sunlight and water

D．sunlight and carbon dioxide

3.The way that _______________________ is called Photosynthesis .

A．plants change water and carbon dioxide into sugar

B．plants turn water and carbon dioxide into sugar with the help of sunlight

C．plants use glucose as food for energy and growing

D．chlorophyll is a great help

4.Which of the following is NOT true?

A．When autumn and winter come, the days get shorter and shorter.

B．During winter trees rest and live on the food they store during the summer.

C．During winter small amounts of yellow and orange colours are kept in the leaves all the time.

D．Trees begin to stop making food in summer.

5.This passage tells us __________________.

A．all the plants can grow well with the strong sunlight

B．there are all kinds of plants on the earth

C．all the colours of the leaves aren’t made from chlorophyll

D．maples and oaks have the same reason as other trees for the change of colours

We all enjoy the beautiful show of colours as leaves change each autumn. But did you ever wonder how and why this happens?
Leaves are nature’s food factories. Plants take water from the ground through their roots and take carbon dioxide (二氧化碳) from the air. Plants use sunlight to turn water and carbon dioxide into glucose (葡萄糖). Glucose is a kind of sugar, which plants use as food for energy and growing.
The way plants turn water and carbon dioxide into sugar is called photosynthesis that means “ putting together with light”. A chemical called chlorophyll helps photosynthesis. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.
During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.
As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. Small amounts of these colours have been in the leaves all along. We just can’t see them in the summer, because they are covered up by the green chlorophyll.
The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples (枫树), glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red colour. The brown colour of trees like oaks (橡树) is made from waste left in the leaves.
It is the mixture of all these things that makes the beautiful colours we enjoy during autumn.
【小题1】The word “chlorophyll” in the third paragraph means _______ in Chinese.

Choose the best answer to complete the passage.

　 The Dragon Boat Festival is celebrated 36 the fifth day of the fifth lunar month by 37　

zongzi and holding dragon boat races.

　 The festival began during the period of Warring States（战国时期), and has a 38 of more than 2,000 years. The date of the festival is said to be the date 39 Qu Yuan died. He was a wise and upright（正直的）man, and was loved 40 people. He wanted the emperor of Chu 41 against the State of Qin with the cooperation（联合）with the State of Qi, 42 was refused and sent to the border area. During his stay in other states, he wrote 43 poems expressing his strong feelings for Chu. On the day when Chu was defeated by Qin, Qu Yuan 44 into Miluo River expressing his strong love for his native land by taking 45 own life.

After the 46 of Qu Yuan, people of Chu went to Miluo River to mourn（哀悼）over the great 47 they loved so much. Some threw eggs and rice wrapped in leaves into the river to feed the fish 48 keep them away from Qu Yuan. Some doctors poured realgar wine 49 the river to kill snakes and other animals that might try to eat Qu Yuan.

Now the Dragon Boat Festival has become a 50　 festival for the Chinese people.

(　 )36. A. at　　　　　　 B. on　　　　　 C. in

(　 )37. A. eating　　　　　 B. to eat　　　　 C. ate

(　 )38. A. vacation　　　　 B. history　　　　 C. date

(　 )39. A. when　　　　　 B. where　　　　 C. why

(　 )40. A. in　　　　　　 B. with　　　　　 C. by

(　 )41. A. to fight　　　　 B. fighting　　　 C. fight

(　 )42. A. or　　　　　　 B. but　　　　　 C. so

(　 )43. A. much　　　　　 B. a lot　　　　　 C. many

(　 )44. A. jumped　　　　 B. looked　　　　 C. turned

(　 )45. A. his　　　　　　 B. he　　　　　 C. him

(　 )46. A. die　　　　　　 B. death　　　　 C. dead

(　 )47. A. emperor　　　　 B. doctor　　　　 C. poet

(　 )48. A. in order that　　 B. so that　　　　 C. in order to

(　 )49. A. into　　　　　　 B. from　　　　　 C. out of

(　 )50. A. modern　　　　 B. traditional　　 C. international