--- Mary knows so much about ______earth!---Y...

--- Mary knows so much about ______earth!

---Yes, although she is only ____eight- year-old girl.

A. an; a　　　　　 B. the; an　　　　 C. the; a　　　　 D. an; an

九年级英语单项填空简单题查看答案及解析

—Mary knows so much about .　　　　　　 earth!

—Yes, you know she is only .　　　　　　 eight-year-old girl.

A. the; a            B. an; an                C. the; an         　　 D. an; a

九年级英语单项填空简单题查看答案及解析

Frank knows so much about _____ earth although he is only ____eight-year-old boy.

A. an; the　　 B. the; an　　 C. an; an

九年级英语单项填空中等难度题查看答案及解析

---John knows so much about the alien.

--- Yes, you know he is only_______ eight-year-old boy.

A. a                B. an           C. the          D. /

九年级英语单项填空困难题查看答案及解析

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

You might not think much about where your garbage goes. But now you might want to know. On July 1,Shanghai introduced a new garbage sorting policy.People there need to put different kinds of garbage ﹣wet,dry,recyclable and harmful,into different dustbins.Other cities in China will do the same soon.

Why is garbage sorting a big problem?It's because there is too much garbage these days.It is bad for our soil,air and water.Actually we can make use of some garbage again.And first,we need to sort our garbage.

For example,if you put an old battery into the "harmful waste"dustbin,people can use it to make new batteries.But if you don' t,the battery will end up somewhere else.Then,it will pollute the environment.

Can't factories sort garbage for us?Yes,they can.But it takes many workers to do this and costs lots of money.If we all sort our own garbage,things will become much easier.

1.Which is the first city to make a garbage﹣sorting policy?　　　

A.Shanghai. B.Beijing. C.Guangzhou. D.Shenzhen.

2.From Paragraph 2,we know that　　　 .

A.sorting garbage is easy B.all garbage is recyclable

C.garbage is bad for the environment D.we can recycle garbage before we sort it

3.With the battery example,the writer tries to tell us　　　 .

A.how to sort our garbage B.what harmful waste is

C.the importance of sorting our garbage D.the difficulty of sorting our garbage

4.From the text,we know that pens are　　　 .

A.harmful garbage B.recyclable garbage

C.wet garbage D.dry garbage

5.Why can't we ask factories to sort garbage?　　　

A.Because we don't have this kind of factory. B.Because it takes too many workers to do it.

C.Because factories ask for too much money. D.Because not all garbage can go to factories.

九年级英语阅读单选中等难度题查看答案及解析

You might not think much about where your garbage goes. But now you might want to know. On July 1,Shanghai introduced a new garbage sorting policy.People there need to put different kinds of garbage ﹣wet,dry,recyclable and harmful,into different dustbins.Other cities in China will do the same soon.

Why is garbage sorting a big problem?It's because there is too much garbage these days.It is bad for our soil,air and water.Actually we can make use of some garbage again.And first,we need to sort our garbage.

For example,if you put an old battery into the "harmful waste"dustbin,people can use it to make new batteries.But if you don' t,the battery will end up somewhere else.Then,it will pollute the environment.

Can't factories sort garbage for us?Yes,they can.But it takes many workers to do this and costs lots of money.If we all sort our own garbage,things will become much easier.

1.Which is the first city to make a garbage﹣sorting policy?　　　

A.Shanghai. B.Beijing. C.Guangzhou. D.Shenzhen.

2.From Paragraph 2,we know that　　　 .

A.sorting garbage is easy B.all garbage is recyclable

C.garbage is bad for the environment D.we can recycle garbage before we sort it

3.With the battery example,the writer tries to tell us　　　 .

A.how to sort our garbage B.what harmful waste is

C.the importance of sorting our garbage D.the difficulty of sorting our garbage

4.From the text,we know that pens are　　　 .

A.harmful garbage B.recyclable garbage

C.wet garbage D.dry garbage

5.Why can't we ask factories to sort garbage?　　　

A.Because we don't have this kind of factory. B.Because it takes too many workers to do it.

C.Because factories ask for too much money. D.Because not all garbage can go to factories.

九年级英语阅读单选中等难度题查看答案及解析

My cousin knows a lot about geography, __ he is only four years old.

A. because               B. so                    C. although

九年级英语单项填空困难题查看答案及解析

--- Do you know much about the city?

--- Yes, I ___________ there three times.

A. was　　　　　 　　　　　　 B. have gone

C. went　　　 　　 　　　　 D. have been

九年级英语单项填空中等难度题查看答案及解析