What is the sky? How high is it? What color i...

What is the sky? How high is it? What color is it? What　 kinds of birds can live above(在……上) it? These questions are difficult to answer, aren't they?

In fact, the sky has no colors. Then why does the sky look blue?

We know that there is air around the world. When planes fly, they need air to lift(抬起) their wings(翼). Planes can't fly very high. That is because the air gets thinner when they go higher. The same will happen to us if we go high enough. If we go up about 1，200 kilometers from the earth, we'll find no air there. Some birds can fly into the sky as high as a plane, but they cannot fly or live without air.

Looking up above us, you will see the blue sky with white clouds. It is usually light blue. The color will be bluer when you see on the top of a high mountain. And you will see fewer clouds in the sky between you and the sun.

Sometimes the sky doesn't look blue. When the sun rises(上升) or falls, you will see red, orange, and other colors in the sky. Such are the most beautiful moments(时刻) of the day.

Who can see the colors of the sky high above the earth? The astronauts! They can see those beautiful colors of the sky from outer space. However, before flying into outer space, they sit in a spaceship high above the earth, and there is no air at all. The sky will be that dark and its color will be black.

Now you may understand that we see colors because the air scatters(使散射) the sunlight. Light(光) travels through the air. Without air, there would be no light or colors.

1.Planes can't fly as high as possible because ________.

A.the sky is blue　　　　　　　　　　　
 B.the wings are heavier

C.the air gets thinner D.the sky has no colors

2.When you stand on the top of a high mountain, you will see ________.

A.more air B.more colors C.bluer skies D.more clouds

3.We might see many colors in the sky at ________

A.6：00 a．m. B.10：00 a．m. C.1：00 p．m. D.3：00 p．m.

4.The passage mainly talks about ________.

A.why planes can't fly high

B.when we can see more colors of the sky

C.why the sky looks blue

D.why the sky changes(改变) colors

八年级英语阅读单选中等难度题查看答案及解析

What is the sky(天空)? Where is it? How high is it? What lies above it? These questions are hard to answer, aren’t they?

Is the sky blue? The sky has no color. We know that there is air around the world. When planes fly, they need air to lift their wings(翼) . Planes cannot fly very high because when they go high, the air gets thinner. If we go up about 1,200 kilometers from the earth, we find there is no air.

Perhaps(也许) we can answer some of our questions now. The sky is space(空间). In this space there is only the sun, the moon and all the stars.

6.What is the sky?

A. It’s the clouds       B. It’s space.     C It’s air      D It’s nothing

7. The sky _____

A. is blue        B. is white        C. is black     D. has no color

8. Planes cannot fly very high because _________.

A. the air becomes thinner                         B. the flying machine is not good

C. people will be afraid if the planes fly too high      D. it is not necessary for planes to fly so high

9 If we go up about 1,200 kilometers from the earth, we find ___________.

A. there is more air   B. there is less air   C .there is nothing but air   D there is no air

10. In space there is _________.

A. nothing       B. air everywhere       C. everything       D. only the sun , the moon and all the stars

八年级英语阅读理解中等难度题查看答案及解析

What is the sky(天空)? Where is it? How high is it? What lies above it? These questions are hard to answer, aren’t they?

Is the sky blue? The sky has no color. We know that there is air around the world. When planes fly, they need air to lift their wings(翼) . Planes cannot fly very high because when they go high, the air gets thinner. If we go up about 1,200 kilometers from the earth, we find there is no air.

Perhaps(也许) we can answer some of our questions now. The sky is space(空间). In this space there is only the sun, the moon and all the stars.

1.What is the sky?

A. It’s the clouds　　　　 B. It’s space.

C. It’s air　　　 　　　　　 D. It’s nothing

2.The sky _____

A. is blue　　　　　 B. is white

C. is black　　 　 D. has no color

3.Planes cannot fly very high because _________.

A. the air becomes thinner

B. the flying machine is not good

C. people will be afraid if the planes fly too high

D. it is not necessary for planes to fly so high

4.If we go up about 1,200 kilometers from the earth, we find ___________.

A. there is more air　　 　　　　 B. there is less air

C.there is nothing but air　 D. there is no air

5.In space there is _________.

A. nothing　　 　 B. air everywhere

C. everything　 D. only the sun ,the moon and all the stars

八年级英语阅读理解中等难度题查看答案及解析

What is the sky(天空)? Where is it? How high is it? What lies above it? These questions are hard to answer, aren’t they?

Is the sky blue? The sky has no color. We know that there is air around the world. When planes fly, they need air to lift their wings(翼) . Planes cannot fly very high because when they go high, the air gets thinner. If we go up about 1,200 kilometers from the earth, we find there is no air.

Perhaps(也许) we can answer some of our questions now. The sky is space(空间). In this space there is only the sun, the moon and all the stars.

6.What is the sky?

A. It’s the clouds       B. It’s space.     C It’s air      D It’s nothing

7. The sky _____

A. is blue        B. is white        C. is black     D. has no color

8. Planes cannot fly very high because _________.

A. the air becomes thinner                         B. the flying machine is not good

C. people will be afraid if the planes fly too high      D. it is not necessary for planes to fly so high

9 If we go up about 1,200 kilometers from the earth, we find ___________.

A. there is more air   B. there is less air   C .there is nothing but air   D there is no air

10. In space there is _________.

A. nothing       B. air everywhere       C. everything       D. only the sun , the moon and all the stars

八年级英语阅读理解中等难度题查看答案及解析

Up in the Sky

Take a trip up a hill on a windy day. What is flying high in the sky? It isn’t a bird or a plane. It is a kite!

Kids and adults like flying kites. Long ago, the first kites were made by Chinese people. Then, people around the world began flying kites.

One story tells a man’s hat got lifted off by wind. He had fun chasing his hat, so he did it again! His hat became the first kite. Other stories tell that people liked watching leaves on windy days. They tied leaves to strings and watched them fly.

Long ago, kites became important in keeping China protected. A man might be lifted up by a kite while he spied(监视) on an enemy. He could use the kite to fly high like a plane. He could also fight from the air!

Kites come in many shapes, sizes, and styles. They are usually made of cloth or paper. A kite might be shaped like a bird,　 a fish,　 or just a box. Kites are also painted with colors.

You can use a kite to catch fish. First you tie a fishing line to a kite. Then you put bait(鱼饵) on the line. You watch the kite with hopes as it flies over the water. When you pull the kite down,　 you might find a fish on your line! Some people think this is more fun than using a fishing pole(杆).

Many countries have special days to honor kites. People make, sell and fly many types of kites. There are several kite festivals in China. The Beijing International Kite Festival is usually held in April every year. People spend all days flying kites. You might see famous fighter kites. People fly these kites quite fast and try to cut other flyer’s lines.

There is much to learn about kites. From long ago in China until now, kites have had many uses. They have been used for spying, fighting, and fishing. But the best way to use a kite is to fly it high for fun!

1.Who made the first kites long ago?_______________________________________

2.What did people tie to strings?___________________________________________

3.What are kites usually made of?__________________________________________

4.When is the Beijing International Kite Festival usually held?____________________

5.What have people used kites for?________________________________

八年级英语任务型阅读困难题查看答案及解析

--- ________is the pen?

--- It's black ________red.

A. What color; and            B. How color; and

C. What color; or              D. How color; or

八年级英语单项填空简单题查看答案及解析

—_______ is the ruler? Is it black?

—Yes, it is.

A. How             B. Who              C. What             D. What color

八年级英语单项填空简单题查看答案及解析

Look! __________ high speed the car is __________! It’s so dangerous.

A. How; moving　　 B. What; moving

C. How; moving at　　 D. What; moving at

八年级英语单项填空简单题查看答案及解析

—______ is this? Is it a ruler?

—Yes, it is a red ruler.

A. How             B. Who              C. What             D. What color

八年级英语单项填空简单题查看答案及解析

—______ nice furniture it is!

—It looks ______ with bright colors.

A.How; better B.How; well C.What a; well D.What; better

八年级英语单选题简单题查看答案及解析