—As we know, the earth is the planet________p...

—As we know, the earth is the planet________provides us with what we need.

— So it’s our duty to protect it.

A.which B.what C.whom

九年级英语单选题中等难度题查看答案及解析

The earth is the planet _______ provides us with everything we need, fresh air, clean water and so on. It’s our duty to protect it.

A. who　　 B. that　　 C. where

九年级英语单选题中等难度题查看答案及解析

The earth is the only planet __________ provides us with everything we need. It’s our duty to protect it.

A. who　　 B. what　　 C. that

九年级英语单选题中等难度题查看答案及解析

Is there another planet with condition 　　　　 those on the earth? If there really is one, maybe one day we can move to that planet.

A. similar to　　 B. same as　　 C. different from　　 D. well as

九年级英语单选题中等难度题查看答案及解析

How much do you know about Earth-the planet that we live on? Our knowledge of Earth has been developing since ancient times. However, many puzzles about Earth remain unsolved. Live Science has published a list of the eight biggest mysteries about Earth. Let's look at some of them.

Where did water come from?

When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water come from? Scientists think that it might have arrived in the form of ice by an asteroid(小行星) from outer space that hit our planet. But this theory has not been confirmed because there is very little related evidence(相关证据)to be studied.

What's in the core(地核)?

Scientists used to study meteorites(陨石)as small examples of Earth, believing that Earth's core was made of iron and nickel(镍). However, a later study in the 1950s proved this way to be wrong because it found that Earth would be too light to provide gravity if its core contained only iron and nickel. Today, scientists continue to bring forward different theories, but none have been confirmed.

How was the Moon born?

Scientists have found that the chemical compositions(成分)of Earth and the Moon are very similar. That suggests that the Moon actually came from Earth. For example, it could be a piece of Earth that separated when Earth hit another planet. It is also possible that when Earth first came into being, it spun(旋转)very fast and threw off enough molten(熔化的)rock to later from the Moon.

1.What's the story mainly about?

A.How Earth came into being. B.Where Earth's water came from.

C.How the Moon was formed. D.Unexplained mysteries about Earth.

2.What do we know about where water may come from?

A.Earth's water may come from ice that melted 4.5 billion years ago.

B.Earth's water may come from a small planet that hit Earth.

C.We don't know where water came from.

D.There is lots of evidence that tells us where water came from.

3.What does the underlined phrase "bring forward" in Paragraph 5 probably mean?

A.Check. B.Raise. C.Improve. D.Receive.

4.Which of the following is TURE according to the passage?

A.Scientists believed Earth's core was made of meteorites.

B.A study in the 1950s proved that Earth's core is made of iron and nickel.

C.The Moon and Earth are made of similar materials.

D.Three possibilities of where the Moon came from are mentioned.

九年级英语阅读单选中等难度题查看答案及解析

How much do you know about Earth—the planet that we live on? Our knowledge of Earth has been developing since ancient times. However, many puzzles (谜) about Earth remain unsolved. Live Science has published a list of the eight biggest mysteries about Earth. Let’s look at some of them.

Where did water come from?

When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water come from? Scientists think that it might have arrived in the form of ice by an asteroid (小行星) from outer space that hit our planet. But this idea has not been confirmed (证明) because there is very little related evidence(相关证据) to be studied.

What’s in the core (地核)?

Scientists used to study meteorites (陨石) as small examples of Earth, believing that Earth’s core was made of iron and nickel (镍). However, a later study in the 1950s proved this way to be wrong because it found that Earth would be too light to provide gravity (引力) if its core contained only iron and nickel. Today, scientists continue to bring forward different ideas, but none have been confirmed.

How was the moon born?

Scientists have found that the chemical compositions (成分) of Earth and the Moon are very similar. That suggests that the Moon actually came from Earth. For example, it could be a piece of Earth that separated when Earth hit another planet. It is also possible that when Earth first came into being, it spun (旋转) very fast and threw off enough molten (熔化的) rock to later form the Moon.

1.What’s the main idea of the passage?

A.How Earth came into being.

B.Where Earth’s water came from?

C.How the moon was formed?

D.Unexplained mysteries about Earth.

2.What do we know about where water may come from?

A.Earth’s water may come from ice that melted 4.5 billion years ago.

B.Earth’s water may come from a small planet that hit Earth.

C.We don’t know where water came from.

D.There is lots of evidence that tells us where water came from.

3.What does the underlined phrase “bring forward” in Paragraph 5 probably mean?

A.Check B.Raise

C.Improve D.Receive

4.Which of the following is TRUE according to the passage?

A.Scientists used to believe Earth’s core was made of meteorites.

B.A study in the 1950s proved that Earth’s core is made of iron and nickel.

C.The moon and Earth are made of similar materials.

D.Three possibilities of where the Moon came from are mentioned.

九年级英语阅读单选中等难度题查看答案及解析

The Earth is faced with a serious power problem now and all of us are affected by it. Should we leave everything to the government, or can we do something to save power? The answer is clear: if not us, who? Let us look at how you can save power at home.

Computer: More often than not, we do not turn off our monitors (显示屏) even after we have shut down our computers. And we often leave our computers on when we walk away to do something else. Keep the monitor and the computer switched off when you are not using them. Start doing this even when at work. You will help save some of the earth’s important power.

Air Conditioning: Put the temperature at the minimum or maximum strongest that you are comfortable with, depending on the season. Try not to put it at too-high or too-low temperatures. This helps you save lots of power.

Washers: Do you use your washing machine as frequently as you wish? Do you use your washing machine even when there are not many clothes to wash? Reduce the times of washing by cleaning plenty of clothes every time.

Television: Unplug (拔出插头) the power plug of your television set when not using it. This may not sound like a big deal but this little step will help oneself save power.

Fridge: Do you always put hot food into the fridge? Bring cooked food to room temperatures before placing it into the fridge. You can also spare power by bringing cold or frozen food out of the icebox a great deal ahead of the mealtime. Thus, you don’t need to heat it.

1.The underlined part in the first paragraph means “________”.

A. If we don’t use power, who will use it?

B. The government should be responsible for saving power.

C. If it is necessary to save power, who will do it?

D. Everyone should do something to save power.

2.The writer thinks we often waste power by not turning off ________.

A. computers and monitors B. air conditioners

C. washing machines D. television sets

3.According to the writer, we’d better ________.

A. wash our clothes as often as we wish B. wash our clothes without using washers

C. wash plenty of clothes at a time D. use washers to wash light clothes

4.The best title for the passage is “________”.

A. How to live green B. How to buy electrical products

C. How to be safe at home D. How to save money

九年级英语阅读单选困难题查看答案及解析

What can we do whenever Earth faces a disaster? Is the only solution running away from the planet in spaceships? The latest Chinese sci-fi movie, The Wondering Earth, offers a different and more ambitious（有雄心的）idea.

The film is based on a short story by Chinese sci-fi writer Liu Cixin. In the film, Earth is in danger of being destroyed by the dying sun. Humans around the world work together to build a giant engine system that will push Earth away from the sun. We're taking the Earth with us to run away.

What makes The Wandering Earth different from Hollywood-style space films? It's probably the special cultural background. For thousands of years, “homeland” has rooted in the hearts and minds of Chinese people. One old saying is luoyeguigen. It means returning to one’s homeland in old age, like fallen leaves returning to the roots of their tree. There are also many ancient poems about homeland. “The season called the White Dew begins tonight / Nowhere as in our native place is the moon so bright” (露从今夜白，月是故多明). These all show that Chinese people have the tight bond（情感纽带） with their homeland.

What is Chinese sci-fi? Guo Fan, the film’s director said: “Chinese sci-fi is a way to express our cultural and the spiritual core (精神内核). Otherwise, we’re just imitating（模仿）others and telling the same American stories.” And the film was released on February 5, 2019, the first day of Chinese New Year. It was a time when many people had just made the hard journey back to their hometowns. It seems the best time to tell this Chinese sci-fi story. Anyway, to us Chinese, Earth goes wherever humans go, because it's our home.

1.Why do people consider the film so ambitious?

A. Humans work together to build a giant engine system.

B. Humans are trying to take the Earth to run away together

C. The film story is written by the famous writer Liu Cixin

D. People have managed to run away from Earth in spaceships

2.Why does the writer use the old saying and ancient poems in this passage?

A. To tell the difference between Chinese and American.

B. To remind us of China's thousands of years of history.

C. To teach some Chinese traditional cultures and spirits.

D. To express Chinese people's love of their homeland.

3.What makes The Wandering Earth different from Hollywood-style sci-fi?

A. Its fantastic pictures and settings. B. Imitating foreign sci-fi films.

C. Its Chinese cultures and spirits. D. Its creative and brave idea.

4.What's the best title for the passage?

A. The Latest Chinese Sci-fi Film B. What is Chinese Sci-fi?

C. Chinese Sci-fi Sets a New Path D. Chinese Sci-fi VS Hollywood-style

九年级英语阅读单选中等难度题查看答案及解析

Thinking of ways to save Mother Earth? It’s high time we did, as the planet. we live on is suffering. Let’s look at some simple ways to save the environment.

Plant more trees.

Choose an open ground near your house and grow trees. Plant a tree every month and encourage your friends to join you. Plant more and more trees and then one day you’ll have an area of green land thanks to your hard work.

Save water.

Water is a very important natural resource . It’s we who waste it, pollute it. The simplest way to save water — turn off water taps after use. Use only as much water as necessary. Do not pollute rivers by throwing garbage or other waste material into them.

Recycle and reuse.

This is the best way to save the environment. A simple way to do this is to reduce the use of rubber and plastic.

Instead, use paper bags and cardboard boxes. Buy products that you can reuse. You can reuse your old clothes by donating them to the needy.

Save animals.

Reducethe use of animal products, like animal fur and ivory . Make yourself and those around you know the effects of animal extinction.（灭绝） Do your bit towards saving the endangered animals.

九年级英语其他题中等难度题查看答案及解析

The Earth is ________only home for mankind. We must protect________planet as we protect our own eyes.

A.an; the B.an; a C.the; a D.the; the

九年级英语单选题中等难度题查看答案及解析