The earth is often called the ocean planet. I...

The earth is often called the ocean planet. Its surface is 70 percent 　　　　 .

A. land B. plants C. animals D. water

九年级英语单选题简单题查看答案及解析

What covers three-fourths of the Earth's surface? It's the water that makes up the Earth's four oceans. They are the Pacific, the Atlantic, the Indian and the Arctic. The Pacific Ocean is the largest and deepest. The Arctic is the smallest and shallowest.

Stand on a beach and watch the ocean. You will see that it is never still (平静的). The ocean is in constant motion (运动). Wind blows across the surface of the water. This makes waves. Ocean waves are different in height. A light wind causes small waves. In a hurricane (飓风)， winds can cause huge. dangerous waves that can get to be more than 14 meters high!

Ocean currents (洋流) are lots of water that move from seaside to seaside. Like waves,currents are caused by wind. Ocean currents can be warm or cold. In areas close to land, warm ocean currents make the air warmer; cold ocean currents make it colder.

At high tide (涨潮时期), the ocean covers much of the beach. At low tide, you can walk on the sand that had earlier been covered by ocean water. Tides are caused by the pull of gravity (重力)as the moon circles the Earth.

The ocean provides people with many resources. Ocean water has salt. a basic cooking material. Ocean fishing provides work and food for many people. The ocean is also a fun place to visit. Children who live near the ocean often like to swim in the waves. hunt for shells. and play in the sand.

The ocean may look like a large pool of water. but it's much more than that.

1.What is mainly talked about in the first paragraph?

A.Four oceans cover three-fourths of the Earth's surface.

B.The Earth's surface is wet.

C.The Pacific Ocean is the largest ocean,

D.The Arctic Ocean is the smallest ocean.

2.The underlined word “constant” in the second paragraph probably means, ___________in Chinese.

A.奇怪的 B.连续的 C.不规则的 D.危险的

3.Which of the following statements is TRUE according to the passage?

A.It is always colder near the ocean.

B.Everyone who lives near the ocean loves to swim.

C.The Arctic Ocean is bigger than the Atlantic Ocean.

D.Oceans provide many of the things that people need.

4.Which of the following can be the best title for the passage?

A.Ocean Fishing B.What Makes Oceans Move C.Ocean on the Move　　　　　　　　　 D.How Oceans Formed

九年级英语阅读单选中等难度题查看答案及解析

The surface of Mars is 　　　 like the surface of earth than 　　　 planet in our solar system.

A. much; the other B. much; any other

C. more; the other D. more; any other

九年级英语单项填空中等难度题查看答案及解析

The surface of Mars is ______like the surface of Earth than_____ planet in our solar system (太阳系)．

A. much； the other　　 B. much； any other

C. more； the other　　 D. more； any other

九年级英语单选题简单题查看答案及解析

Everybody knows that Earth spins from west to east. That is to say, it appears to be turning counterclockwise (逆时针) rapidly when viewed from above the North Pole. But what if Earth started spinning the other way?

Scientists from Germany have made a computer simulation in which Earth spins in the opposite direction ﹣ clockwise when viewed from above the North Pole. This showed them some interesting things about the weather and geography on Earth, Live Science reported.

As Earth spins in a counterclockwise direction, it shapes certain ocean currents (洋流). The direction of ocean currents, together with winds, produces different weathers around the globe. But a backward spin changes the ocean currents and winds. ▲ Western areas of the lands on Earth cool down as the eastern parts warm up. Winters become even colder in northwestern Europe, while eastern Russia becomes warmer than before. Rain no longer falls on the planet's wettest places.

Another result of a backward spin is that Earth becomes greener. Scientists found that global desert (沙漠) areas reduce from 42 million square kilometers to 31 million square kilometers. This may have something to do with the changing weather. Therefore, you can see rich green landscapes from Central Africa to the Middle East, which are mostly covered with deserts now. More surprisingly, the Sahara Desert becomes an oasis.

However, deserts don't disappear. They just appear in some places in which they never appeared before. Deserts would cover North America, where countries like the United States and Canada lie. Sand dunes would replace the Amazon rainforest in South America.

A backward spin would keep the main features (特征) of Earth's geography, such as the size, shapes and positions of lands and oceans. But it would change the interactions between circulating air, ocean and geography, lead scientist Florian Ziemen told Live Science.

1.What would a backward spin bring to Earth?

A.The direction of ocean currents and winds would be different.

B.Rain would no longer fall on western areas of the lands on Earth.

C.Deserts would become larger and cover the planet's wettest places.

D.The size, shapes and positions of lands and oceans would be changed.

2.Which of the following sentences can be put in the blank of Paragraph 3?

A.Anyway, deserts cover the planet.

B.Therefore, the weather is different.

C.However, the positions of oceans changes.

D.Surprisingly, the area of lands is larger.

3.The underlined word "oasis" in Paragraph 4 means ________ in Chinese.

A.海洋 B.绿洲 C.戈壁 D.高原

4.The passage is most probably taken from a magazine on ________.

A.history B.culture C.art D.geography

九年级英语阅读单选中等难度题查看答案及解析

Do you often use plastic straws (吸管)? You probably use them to drink lots of things, such as cola or milk tea 1. They are made in 10 minutes, used in 20 minutes and remain on the earth for over 100 years since they can't be broken down (分解) easily.

But how do plastic straws get into the ocean? Through human mistakes, they are often thrown everywhere. The waste management in some areas is so poor. All gutters (排水沟) lead to our ocean　 2. Once a turtle was found bleeding because a 12-centimeter-long plastic straw was pushed into its nose. How terrible!

3. That is enough to circle nearly two-and-a-half times around our planet! If we didn't act now, there would be more plastic in the ocean than fish by 2050.

Luckily, more and more people around the world have realized this problem. They begin to consider if they really need to use plastic straws when drinking drinks.

So what can we do to reduce (减少) plastic pollution? 4. For example, next time you go to a restaurant, make sure you order your drink without a straw. What if people need to use a straw? There are reusable straws that can be cleaned and reused instead.

Starbucks (星巴克) has started to offer straw less lids (盖子) and paper straws instead of plastic straws in almost 1,000 stores in Shanghai and Shenzhen. Starbucks is not alone. 5. It is hoped that more businesses and customers will play a part in protecting our environment.

Choose five sentences out of the six in the box to complete the passage. Each choice should be used only once.

A.Even worse, plastic straws kill ocean life.

B.So plastic straws mustn't be thrown into the ocean.

C.Plastic straws are small but they are a big problem.

D.The simplest way is to say "No" to single-use plastic, like straws.

E.McDonald's has also taken action to reduce the use of plastic straws.

F.In fact, around 500 million plastic straws are used every day in the US alone.

九年级英语补全短文6选5中等难度题查看答案及解析

Thirteen years ago, the Planet Earth wildlife documentary took us all on an amazing journey. We went from deep rainforests to the bottom of the ocean. Now a new one ,Our Planet, will let us see different animals and the influence of humans on the natural world. The documentary covers 50 countries and areas. It took more than four years to produce it.

With the latest 4K video technology, the show allows people a wonderful new look at nature. “People are given a chance to better get themselves into the lives of the animals” said Fothergill, one of the show's producers.

Besides showing Earth's beauty, the documentary also talks about the planet's climate conditions. "Our Planet is here to say,' The planet is dying, and we're killing it.’" Fothergill said. In one sad scene, hundreds of walruses(海象)，half-blind when out of the water, fall down a rock and suffer a painful death on the beach below. It shows how the climate conditions have influenced their natural habitat and explains why they've been forced to find the safe place on the rocks.

But the documentary is not all about sadness. It also talks about success stories, such as the ones of tigers. These animals are saved and live happily thanks to international agreements on environmental protection.　　

Asking more people to take action in protecting our planet is the final goal of the new documentary. What we do in the next 20 years will decide the future of all life on Earth.

1.What's the documentary Our Planet about?

A.The relationship between the climate conditions human activities.

B.Different animals and the influence of humans on the natural world.

C.The living conditions of walruses and tigers.

D.The beauty and customs of 50 countries and areas.

2.What's the purpose of the last paragraph?

A.To explain what our goal is in the future.

B.To call for more people to protect our planet.

C.To tell us how the climate conditions influence animals.

D.To introduce international agreements on environmental protection.

3.What can we infer from the passage?

A.It took a lot of time and efforts to make the documentary.

B.The documentary is popular in many countries and areas.

C.We should have a new look at the environmental protection.

D.Our goal in the future is getting along well with animals.

4.Where is the text probably from?

A.A novel B.A dictionary C.A storybook D.A newspaper.

九年级英语阅读单选中等难度题查看答案及解析

Seventy percent of our planet is covered by one huge body of seawater-the ocean. In 2008, the United Nations recognized(确立) June 8 as World Oceans Day. It's a day to think about the important role that the oceans play in our lives, the dangers that our oceans are facing and the action we can take to protect them.

The ocean is home to the most of plants and animals on Earth. Plants in the sea provide us with 70 percent of O2 we breathe. The ocean controls our climate (气候), providing heat in winter and cool air in summer. It also provides us with food and medicine. No matter where you live on the planet, no matter how far from the sea, your life is dependent on the ocean.

The biggest problem facing the ocean at the moment is plastic pollution. Reducing single-use plastic, including plastic bags and plastic bottles, has been an important theme for World Oceans Day for a number of years.

Climate change and rising sea temperatures are also a huge problem. Rising sea temperatures have a direct influence on weather patterns and are seen as partly responsible for an increase in extreme (极端的) weather.

The day is celebrated in all kinds of ways, including special events on the beach, river clean-ups, school activities, art contests and film festivals. You can join in to remind people about the importance of our oceans and to make a difference.

1.What percent of our planet is covered with seawater?

A.30% B.40% C.70%

2.What is the main idea of Paragraph 2?

A.The ocean provides us with heat and cool air.

B.Our life is dependent on the ocean.

C.The ocean provides us with food and medicine

3.What is the biggest problem facing the ocean?

A.Plastic pollution. B.Reducing single-use plastic. C.Air pollution.

4.What is partly responsible for an increase of extreme weather?

A.Climate change. B.Rising sea temperatures. C.Weather patterns.

5.How do people celebrate World Oceans Day?

A.Eating out together. B.Having a meeting. C.Holding special events.

九年级英语阅读单选中等难度题查看答案及解析

科学家的发现

Astronomers(天文学家) have always wondered if life exists beyond Earth. Scientists have used technology and instruments to study it for many times. If it does, our neighbor Mars is the most likely place to find it.

Mars is a planet of wild extremes. It has the largest dust storms, the deepest and longest valley(峡谷), the highest mountain, and the largest volcano(火山) known in our solar system! But to most scientists, the biggest question is whether life is, or was, possible on the planet.

Advances in technology have allowed scientists to match robots with a variety of tools. Then they send them to study Mars. These scientific instruments have been able to discover information that life is possible there. For example, one of the most important requirements for life, the existence of some form of water, has been discovered in several areas of Mars. A large amount of ice is under the surface and also frozen in the polar caps(极地冰冠) year-round. In 2015, scientists found that liquid water exists on Mars's surface. But will this finding lead to the discovery of life on the Red Planet? We're still waiting to find out and we have confidence to get the answer in the near future.

1题完成句子；2题用英语表达文中画线单词It所指代的内容； 3题简略回答问题；4题用英语简要概括本文的主旨大意；5题将文中画线句子译成汉语。

1.Mars is the____________ place to find the existence of life beyond Earth.

2.______________________________

3.What's one of the most important requirements for life according to the passage?

______________________________

4.The passage is mainly about______________________________.

5.______________________________

九年级英语多任务混合问题困难题查看答案及解析

Part of Earth's beauty comes from its oceans. Ocean scientists study the chemical make-up of the ocean, weather patterns, the geography of the ocean floor, and many other areas. Their work is exciting, although sometimes dangerous. Using technology to do certain tasks helps. For example, robotic arms are used for very dangerous tasks.

One basic part of ocean study is understanding waves and how they work. Wind is the great maker of waves. The waves we know are mostly produced by winds blowing over the sea. They are directly connected with the wind speed and the time that wind lasts.

Sometimes ocean life can be seen in the wave. Living things seem to be staying within the wave, moving slowly inside it as if they were weightless. Besides the beauty of waves, scientists are interested in their technical ways. The diagram of waves shows how scientists examine waves. Waves are measured (测量) from the top (crest) to the bottom (trough). This allows scientists to find out the height of a wave. They also measure waves from crest to crest to determine (测定) the length of a wave.

During serious storms, huge waves might cut a sea ship apart. Ships are at great risk of winding up as broken pieces after being hit by the force of a huge wave. By understanding the ocean, scientists can prevent this breakup of ships by predicting when the water will be too dangerous for people and their ships. The study of waves and the ocean also allows scientists to make sure how certain beaches were formed. By studying the oceans, a great deal can be learned about the surface we live on.

1.Why are robotic arms used? Because ________.

A.certain tasks are very dangerous B.the tasks are exciting

C.the oceans are beautiful D.there are many studying areas

2.What can we learn from the second paragraph?

A.Waves can make wind. B.Most waves are produced by winds.

C.Scientists make most waves. D.Waves have nothing to do with wind.

3.What is the meaning of "the length of a wave" according to paragraph 3?

A.The beauty of huge waves.

B.The technical way to study the sea.

C.The distance from crest to crest of a wave.

D.The distance from the top to the bottom of a wave.

4.Which of the following statements are right according to the passage?

① Scientists can decide the weather patterns.

②We can't find living things in the waves.

③By studying the ocean, scientists can prevent the breakup of ships.

④The study of waves helps scientists know how certain beaches were formed.

A.①③ B.②④ C.③④ D.②③

5.Where is the passage probably from?

A.A diary entry. B.A fairy tale. C.A travel guide. D.A science magazine.

九年级英语阅读单选中等难度题查看答案及解析