It’s sad to learn that a whale has died in th...

It’s sad to learn that a whale has died in the ocean. However, that’s not the end for the whale. It has a lot to give to other sea animals after death.

When a whale dies, it quickly sinks (下沉) to the bottom of the ocean floor. There, the whale body provides food and nutrients (营养) to deep-sea animals, which are often hungry for food. The remains can last for hundreds of years and create a complex ecosystem called a whale fall (鲸落).

Chinese scientists found a whale fall for the first time in the South China Sea during a deep-sea expedition (考察) carried out by oceanic research vessel (舰) Tansuo-1, which finished its expedition on April 2, 2020. Tansuo-1 carried the manned submersible (潜水器) Shenhai Yongshi, which is able to dive to a depth of 4,5000 meters.

The whale fall in the South China Sea is about three meters long. Scientists have found several species (物种) of shrimp and fish near the whale fall. Some fish have started to eat the whale’s tail. The whale fall might be quite recent and needs long-term observation (观察), according to Xie Wei, a scientist who took part in the expedition.

The whale fall ecosystem can exist in the deep ocean because great pressure and cold temperatures there prevent body from decomposing too quickly. But the depth also makes it hard for scientists to discover them. There are about 50 known whale falls in the world.

By studying the whale fall, scientists can better understand how marine (海洋的) ecosystems support life and how to protect biodiversity (生物多样性) resources in the deep sea.

1.What does the writer try to describe in the second paragraph?

A.when a whale fall happen. B.where a whale fall happen.

C.why a whale fall happen. D.how a whale fall happen.

2.Which sentence about the whale fall in the South China Sea is wrong?

A.It was found during a deep-sea expedition.

B.There was several species of shrimp and fish around it.

C.Scientists have finished the study of it.

D.Scientists from China found it on April 2, 2020.

3.The underlined words “decomposing” in Paragraph 5 means _________.

A.putting in B.going bad C.falling over D.setting off

4.Why do scientists study the whale fall?

a. To understand how marine ecosystem support life.　　

b. To find how long the whale fall is.　

c. To protect biodiversity resources in the deep sea.

d. To study whether fish eat the whale’s tail.

A.a b B.a c C.b c D.b d

5.Which magazine can we probably find this article in?

A.Science. B.Geography. C.Mystery. D.Travel

九年级英语阅读单选中等难度题查看答案及解析

I felt very sad not to be able to get the ticket for the film Titantic last Friday. I learned in the newspaper that ticket could be bought at the cinema box office (售票处) in Richland Hill every day between 10:00 and 4:00. Because I work from 9:00 to 5:30, the only time I could go to the cinema was during my 45-minute lunch time. It is a pity that the cinema is on the other side of the town, and the bus service between my office and Richland Hills is not very good. But if you are lucky, you can make the round(往返) trip in 45 minute.

Last Monday I stood at the bus stop for fifteen minutes, waiting for a bus. By the time I saw one come around the corner, there was not enough time left to make the trip---- so I had to go back to the office. The same thing happened on Wednesday. On Thursday my luck changed, I got on a bus right away and arrived at the cinema in twenty minutes. But when I got there, I found a long line of people at the box office. I heard one man say he had been waiting in line for fifty-five minutes. I found that I would not have enough time to wait in line, I caught the next bus and went back across the town.

By Friday I understood my only hope was to make the trip by car.it was not cheap,but I felt it would be worth ot to see the film. The trip by car only took 10 minutes, but it felt like one hour to me. When I reached the cinema, I was delighted to see that nobody was waiting in line. But quickly found out that it was because they had already sold all the tickets.

1. It seems that the writer of the story works ________.

A. in a small town   B. in Richland Hills

C. on a farm near the town  D. at a bus service Center

2. He tried to go to the cinema bo buy a ticket but really got there ________.

A. five times    B. four times    C.three times    D. twice

3.The underlined word “delighted” means ________.

A. sure    B. sorry    C. surprised    D. pleased

4. Which of the following is true according to the story?

A. The writer was too busy to have time for a rest during the day.

B. The buses running between his office and Richland Hills were always on time on Thursday.

C. He could buy the tickets neither before nor after work hours.

D. It always took him about twenty minutes to get to the cinema by bus.

5.What’s the title of the story?

A. How to Get a Ticket     B. Tickets Sold out

C. A Wonderful Film        D. The Way to the Cinema

九年级英语阅读理解中等难度题查看答案及解析

— What a pity that Kobe Bryant has died in a terrible accident!

— Yes. But the work he has done ________ encouraging us.

A.will keep B.would keep C.has kept D.had kept

九年级英语单选题简单题查看答案及解析

The boy is so sad because his lovely pet _____ for four days.

A．has died          B．has been dead      C．is dying           D．has dead

九年级英语单项填空中等难度题查看答案及解析

If you have ever been swimming in the ocean, you may have noticed that sea water is easier to float in than pool water. Here's why.

You'll need：

Two bowls　　 Food coloring　 Spoon　　 Salt　　　 Two eggs

1: Fill bowls half way with water.

2:Add 10 tablespoons of salt to one bowl, mix until it dissolves (溶解), and then add several drops of color.

3:Carefully, put an egg into each bowl of water and watch what happens.

What happens?

The egg in the plain water sinks. 　　　　　 The egg in the salt water floats.

(If the salt water egg does not float well, mix more salt into the bowl )

The water and salt particles（粒子）in the salt water bowl are closer together it than plain water particles are. They push harder against the egg than the plain water particles do and the egg floats.

1.The purpose of: the experiment is to explain ________________.

A.why the egg floats in the salt water

B.why people float more easily in the sea

C.how we can make the egg float in water

D.how the water and salt particles act together

2.According to the text, if the egg in the salt water doesn’t float, which is the reason?

A.The water is too hot. B.The egg is not fresh.

C.The bowl is too small. D.The salt is not enough.

3.What is this passage probably taken from?

A.A science magazine B.A tour guide. C.A news report. D.A geography book

九年级英语阅读单选中等难度题查看答案及解析

— I hear Dan has made up his mind to learn a(n) ______.

— That’s true. He will learn to play the guitar.

A. play　　 B. language

C. opera　　 D. instrument

九年级英语单选题中等难度题查看答案及解析

I was told that the famous film star_______cancer.His______made us very sad.

A. died from;dead　　 B. died of;die　　 C. died from;dying　　 D. died of;death

九年级英语极难题查看答案及解析

He has failed in the maths test and looks sad. Let’s tell him some jokes to ________.

A. pick him up　　 B. give him up

C. cheer him up　　 D. wake him up

九年级英语单项填空简单题查看答案及解析

A man is traveling in the desert and loses his way. He has no water to drink and thinks he will die. After walking for two days, he finds an old wooden house. He _____ the house, and finds a water pump. He is very _____， and goes to get some water, but no water comes out.

He _____ heart, and sits on the ground. At that time, he sees a _____ near the water pump. It is full of water and there is a note on the bottle. It says，“You must　 _____ the water into the pump to get water out of it.　 _____ to fill this bottle when you leave the house.”

He looks at the bottle of water, and can't decide　 _____ to do. If he drinks the water, he may be able to survive in the desert for a while. _____ if he puts the water into the water pump, he may get enough water to help him get out of the desert, or may get _____. Finally, he puts the whole bottle of water into the water pump. Then he pumps water out. He drinks as ______ as he can, and fills the bottle with water again.

A few days later, he walks out of the desert.

1.A. cuts down　　 B. walks around　　 C. comes into　　 D. comes out

2.A. excited　　 B. bored　　 C. angry　　 D. tired

3.A. beats　　 B. loses　　 C. wins　　 D. breaks

4.A. pump　　 B. house　　 C. way　　 D. bottle

5.A. put　　 B. drop　　 C. drink　　 D. catch

6.A. Want　　 B. Continue　　 C. Remember　　 D. Agree

7.A. how　　 B. what　　 C. when　　 D. where

8.A. So　　 B. Or　　 C. And　　 D. But

9.A. nothing　　 B. anything　　 C. something　　 D. everything

10.A. many　　 B. little　　 C. few　　 D. much

九年级英语完型填空中等难度题查看答案及解析

A man is traveling in the desert and loses his way．He has no water to drink and thinks he will die．After walking for two days，he finds an old wooden house．He ____ the house，and finds a water pump. He is very ____，and goes to get some water，but no water comes out．

He ____ heart，and sits on the ground．At that time，he sees a ____ near the water pump．It is full of water and there is a note on the bottle．It says，“You must ____ the water into the pump to get water out of it．____ to fill this bottle when you leave the house．”

He looks at the bottle of water，and can’t decide ____ to do．If he drinks the water，he may be able to survive in the desert for a while．____ if he puts the water into the water pump，he may get enough water to help him get out of the desert，or may get ____．Finally，he puts the whole bottle of water into the water pump. Then he pumps water out．He drinks as ____ as he can，and fills the bottle with water again.

A few days later，he walks out of the desert．

1.A. cuts down　　 B. walks around　　 C. comes into

2.A. excited　　 B. bored　　 C. angry

3.A. beats　　 B. loses　　 C. wins

4.A. pump　　 B. house　　 C. bottle

5.A. put　　 B. drop　　 C. drink

6.A. Want　　 B. Continue　　 C. Remember

7.A. how　　 B. what　　 C. when

8.A. So　　 B. Or　　 C. But

9.A. nothing　　 B. anything　　 C. something

10.A. many　　 B. little　　 C. much

九年级英语完型填空困难题查看答案及解析