There's much to see under the sea, but you ne...

There's much to see under the sea , but you need to remember that light behaves differently in water than in air . The objects appear closer to you than they exactly are . You might find yourself reaching out to touch something and completely missing it.

Objects under water will appear larger than they would on surface , too . Be careful not to tell any stories about the big fish that got away. That fish might not be so big after all ! It's just because sometimes things can seem to be as much as about 33 percent bigger in water!

What's more , in deeper water , colors just don't seem as bright . In fact , it looks as if some colors are missing . Remember the color of an object results from the wavelengths of light that are reflected from its surface . And light is taken in as it moves down through the water.

Swimmers wear wet suits to keep warm underwater　 . Let's take a bright red,yellow , and blue wet suit as an example . These colors are hard to miss on the surface of water.Watch carefully the changes in color as you descend in the water . The red part now looks almost black because the red light wavelengths , the longest among these three colors , are missing . As you go down deeper, the same thing will happen to the yellow part and in the end to the blue part . Even at a place about 6 to 9 meters underwater , you will look terrible, like a ghost! And you have to wait for your return to the surface to enjoy the bright colors again !

根据材料内容选择最佳答案。

1.You miss the object underwater when you want to touch it because________.

A.your eyesight is quite poor B.you are not quick enough

C.it disappears very quickly D.it is not as close as it seems

2.The example of the wet suit is used to explain the change of________of an object underwater .

A.the size B.the weight C.the position D.the color

3.The underlined word " descend " probably means________in　 Chinese in this passage .

A.上升 B.漂浮 C.屏息 D.下潜

4.Which of the following is true ?

A.A four-meter-long fish looks three meters long underwater

B.The wavelengths of red light are longer than those of blue light

C.Much water will be taken in by the swimmer deep in the water

D.You will see a ghost if you go as deep as 6 to 9 meters into the sea

5.The best title of this passage is________.

A.The Standand of Color Underwater B.The Behavior of Light Underwater

C.The Brightness of Color Underwater D.The Direction of Light Underwater

九年级英语阅读单选中等难度题查看答案及解析

There's much to see under the sea, but you need to remember that light behaves differently in water than in air. The objects appear closer to you than they exactly are. You might find yourself reaching out to touch something and completely missing it.

Objects under water will appear larger than they would on the surface, too. Be careful not to tell any stories about the big fish that got away. That fish might not be so big after all! It's just because sometimes things can seem to be as much as about 33 percent bigger in water!

What's more, in deeper water, colors just don't seem as bright. In fact, it looks as if some colors are missing. Remember the color of an object results from the wavelengths (波长) of light that are reflected (反射) from its surface. And light is taken in as it moves down through the water.

Swimmers wear wet suits to keep warm underwater. Let's take a bright red, yellow, and blue wet suit as an example. These colors are hard to miss on the surface of water. Watch carefully the changes in color as you descend in the water. The red part now looks almost black because the red light wavelengths, the longest among these three colors, are missing. As you go down deeper, the same thing will happen to the yellow part and in the end to the blue part. Even at a place of about 6 to 9 meters underwater, you will look terrible, like a ghost! And you have to wait for your return to the surface to enjoy the bright colors again!

1.You miss the object underwater when you want to touch it because________.

A.your eyesight is quite poor

B.you are not quick enough

C.it is not as close as it seems

D.it disappears very quickly

2.The example of the wet suit is used to explain the change of________of an object underwater.

A.the color B.the size C.the position D.the weight

3.The underlined word "descend" probably means________ in this passage.

A.go out B.go up C.go in D.go down

4.Which of the following is true?

A.The wavelengths of red light are longer than those of blue light.

B.A four-meter-long fish looks three meters long underwater.

C.Much water will be taken in by the swimmer deep in the water.

D.You will see a ghost if you go as deep as 6 to 9 meters into the sea.

5.The best title of this passage is________.

A.The Standard of Color Underwater B.The Direction of Light Underwater

C.The Brightness of Color Underwater D.The Behavior of Light Underwater

九年级英语阅读单选困难题查看答案及解析

There's much to see under the sea, but you need to remember that light behaves differently in water than in air. The objects appear closer to you than they exactly are. You might find yourself reaching out to touch something and completely missing it.

Objects under water will appear larger than they would on the surface, too. Be careful not to tell any stories about the big fish that got away. That fish might not be so big after all! It's just because sometimes things can seem to be as much as about 33 percent bigger in water!

What's more, in deeper water, colors just don't seem as bright. In fact, it looks as if some colors are missing. Remember the color of an object results from the wavelengths(波长) of light that are reflected(反射) from its surface. And light is taken in as it moves down through the water.

Swimmers wear wet suits to keep warm underwater. Let's take a bright red, yellow, and blue wet suit as an example. These colors are hard to miss on the surface of water. Watch carefully the changes in color as you descend in the water. The red part now looks almost black because the red light wavelengths, the longest among these three colors, are missing. As you go down deeper, the same thing will happen to the yellow part and in the end to the blue part. Even at a place of about 6 to 9 meters underwater, you will look terrible, like a ghost(鬼怪)! And you have to wait for your return to the surface to enjoy the bright colors again!

1.You miss the object underwater when you want to touch it because 　　　　　 .

A. your eyesight is quite poor

B. you are not quick enough

C. it is not as close as it seems

2.The underlined word “descent” probably means “　　　　　 ” in Chinese in this passage.

A. 下潜　　 B. 漂浮　　 C. 屏息

3.Which of the following is true?

A. A four­meter­long fish looks three meters long underwater.

B. The wavelengths of red light are longer than those of blue light.

C. Much water will be taken in by the swimmer deep in the water.

4.The best title of this passage is 　　　　　 .

A. The Standard of Color Underwater

B. The Direction of Light Underwater

C. The Behavior of Light Underwater

九年级英语阅读单选中等难度题查看答案及解析

You may love to see tigers at the zoo.But what if you had to stay with one on a boat on the open sea for over 200 days? Life of Pi(《少年派的奇幻漂流》)，the movie from American Chinese director(导演)，Li An，tells an amazing story.

Pi is a boy.He lives happily with his family in a beautiful Indian town.His father has a zoo，so Pi knows a lot about animals.

But one day，his father decides to move to Canada.He will sell all his animals there.The family begins to sail on the Pacific with all the zoo animals.But a big storm(暴风雨)hits their ship at night Finally.Pi finds the only survivors(幸存者)are himself and a large tiger called Parker on an 8­meter boat.

To keep himself alive，Pi has to keep feeding the tiger so that he himself does not get eaten.He tries to get on well with the tiger during a 227­day sail on the sea.

The movie is from a Canadian writer Yann Martel’s book of the same name.(1)这本书已经在全世界卖出七百万本了。_It discusses not only hope but also relationship(关系)between humans and nature.

(2)It_took_Li_An_four_years_to_make_the_movie.He also used 3D for his first time.He hopes the movie will “make the people think”．Life of Pi opened in Chinese theaters on November 22,2012.

1.Where does Pi’s father decide to move?

_________________________________

2.What happens when they sail on the Pacific at night?

_________________________________

3.Why does Pi have to keep feeding the tiger?

_________________________________

4.将文中划线句子(1)翻译成英文。

_________________________________

5.将文中划线句子(2)翻译成中文。

_________________________________

九年级英语多任务混合问题中等难度题查看答案及解析

I hope to see you at the office tomorrow, but if _____, do remember to leave me a message.

A. possible　　 B. so　　　 C. not

九年级英语单项填空中等难度题查看答案及解析

Do you get enough sleep? With so much homework it’s often difficult to get the rest you need. But you need to try, because sleep keeps you healthy and it stops you getting fat.

Recently, a group of US experts did a study of kids aged between 8 and 13. The study found that if kids sleep for just one extra hour each day, the chance of their getting fat is cut by about 30 percent.

Why? When people don’t get enough sleep, they become tired. When they are tired, they don’t exercise enough. Also, kids like snacks: If they are awake an extra hour or two each day, they have more time to eat snacks or other unhealthy foods.

So, how much sleep should you get? Scientists suggest 10 to 11 hours a night for kids aged 5 to 12. For older kids, eight to nine hours will do.

1.How many reasons are given why people might get fat without enough sleep?

A. 3.　　 B. 2.　　 C. 1.　　 D. None.

2.If you are under 10, how long do the scientists advice you to sleep?

A. 10 to 11 hours.　　 B. 8 to 9 hours.

C. 8 to 13 hours.　　 D. As long as possible.

3.What does “eight to nine hours will do” mean?

A. Eight to nine hours’ sleep will be good and enough.

B. Eight to nine hours’ sleep will be too long.

C. Eight to nine hours’ sleep will help get fat.

D. Eight to nine hours’ sleep will help eat snacks and unhealthy foods.

4.What does the passage talk about?

A. How to get long sleep.

B. How to keep fat.

C. Enough sleep makes people healthy and slim.

D. Long sleep makes people healthy and slim.

九年级英语阅读单选困难题查看答案及解析

Do you get enough sleep? With so much homework, it’s often difficult to get the rest you need. But you need to try, because sleep keeps you healthy and it stops you getting fat.

Recently, a group of US scientists did a study of kids aged between 8 and 13. The studt found that if kids sleep for just one extra hour each day, the chance of their getting fat is cut by about 30%.

Why? When people don’t get enough sleep, they become tired. When they are tired, they don’t exercise enough. Also, kids like snacks. If they are awake an extra hour or two each day, they have more time to eat snacks or other unhealthy foods.

So, how much sleep should you get? Scientists suggest 10 to 11 hours a night for kids aged 5 to 12. For older kids, eight to nine hours will do.

1.How many reasons are given why people might get fat without enough sleep?

A. 4　　　　　　　　 B. 3　　　　　　　　　 C.2　　　　　　　 D. 1

2.If you are 9, how long do the scientists advice you to sleep?

A. 10 to 11 hours　　　　　　　　　　 B.8 to 9 hours

C. 8 to 13 hours　　　　　　　　　　　　 D. 8 to 11 hours

3.Where was the study done by the scientists?

A. In China.　　　　 B. In Britain.

C. In Canada.　　　　 D. In America.

4.What does “eight to nine hours will do” mean?

A. Eight to nine hours’ sleep will be good and enough

B. Eight to nine hours’ sleep will be too long.

C. Eight to nine hours’ sleep will help get fat.

D. Eight to nine hours’ sleep will make you tired.

5.What does the passage talk about?

A. How to get long sleep.

B. How to keep fat.

C. Enough sleep makes people healthy and slim.

D. Sleep more to keep healthy.

九年级英语阅读理解中等难度题查看答案及解析

I want to see the doctor, but you _______ with me, which answer is incorrect?

A. need not to go　　　　　　 B. don’t need to go

C. need not go　　 　　　　 D. don’t have to go

九年级英语单项填空中等难度题查看答案及解析

If you need to call your parents but your phone is not with you, can you remember their numbers. To remember 11 numbers is not difficult. However, because of the smart phone(智能手机), many of us are losing this ability, Record Japan reported. What’s more, smart phones make our skills at giving directions weak, as well as killing face-to-face communications. Even when friends are having a meal together, it’s common for most to check their phones.

According to a report by Kleiner Perkins Caufield Byers, an American company, Chinese people spend average(平均数)170 minutes on their smart phones daily.

For students, an addiction to smart phones does no good for studying. Research in Japan showed children who spend more than four hours a day on their phones do much worse in school tests than those who play with their phones for 30 minutes.

It’s true that the smart phone has made our lives easier. But many also think they spend too much time on it, and this is bad for their study or work. People are trying to change that.

A new app(应用程序) called Forest was introduced this month. It lets users plant a seed that grows into a tree over the next 30 minutes. During the half hour, users cannot use their phones, or the tree will die.

A restaurant in Los Angeles, US, gives people a 5% discount(折扣) if they don’t check their phones during a meal. Owner Mark Gold said that he hopes it gives people a way to enjoy their meal and really talk with friends and family.

1.What abilities and skills are we losing or becoming weak because of the smart phone?

A.Checking phone numbers.

B.Having meals together with friends.

C.Having communications with classmates.

D.Remembering phone numbers and giving directions.

2.Which statement (陈述) about the research in Japan is incorrect?

A.Smart phones make students’ lives and study easier.

B.Chinese people spend nearly three hours on smart phones daily.

C.Spending too much time on smart phones is bad for their studies.

D.Students who use smart phones for over two hours daily do better in tests.

3.The underlined word “addiction” probably means _______ in Chinese.

A.沉溺 B.研究 C.购买 D.向往

4.What is the best title of the article?

A.The Advantages of Smart Phones.

B.The Disadvantages of Smart Phones.

C.The Quality of People Using Smart Phones.

D.The Changes of Smart Phones.

九年级英语阅读单选中等难度题查看答案及解析

If you need to call your parents but your phone is not with you, can you remember their numbers?

To remember 11 numbers is not difficult. However, because of the smartphone, many of us are losing this ability, Record Japan reported.

What’s more, smartphones weaken our skills at giving directions as well as　 it’s common for most of them to check their phones.

According to a report by Kleiner Perkins Caufield Byers, an American company, Chinese people spend on average 170 minutes on their smartphones daily.

For students, an addiction(沉溺) to smartphones does no good for studying. Research　 by Japan’s Education Ministry shows that children who spend more than four hours a day on their phones perform much worse in school tests than those who play with their phones for 30 minutes a day.

It’s true that the smartphone has made our lives easier. But many also think they spend too much time on it, and this is bad for their study or work. People are trying to change that.

A new app called Forest was introduced this month. It lets users plant a seed(种子) that grows into a tree over the next 30 minutes . During the half hour, users cannot use their phones, or the tree will die.

A restaurant in Los Angeles, US, gives people a 5 percent discount(折扣) if they don’t check their phones during a meal. Owner Mark Gold said that he hoped it could give people a way to enjoy their meal and actually talk with friends and family in person.

九年级英语阅读理解中等难度题查看答案及解析