“Millions of young people will lose their hearing in five years if they listen to MP3 or MP4 players at a too high voice every day,” scientists say recently.
Do you often listen to MP3 players at a too high voice? Are you frightened to hear this?
The sizes of MP3 players are very small, but small MP3 players make it easy to take hundreds of songs with you. So many young people carry them and listen to music every day. MP3 players are very popular among students. 
The scientists say teenagers should be far from high volume (音量), including mobile phones’ noise. A study says, “High volume and long listening time can cause hearing problems.” They think if young people listen at more than 89 decibels (分贝) every day, they will lose their hearing in five years. A scientist said, “So many young people often use personal music players and mobile phones at a high voice. I am afraid that they may be losing their hearing.
So let’s turn our MP3 players down!
【小题1】According to the passage, which of the following is true?

A．Scientists tell young people to turn off their MP3 players.

B．Teenagers will lose their hearing if they listen to hundreds of songs in MP3 players.

C．A person will lose hearing in 5 years if he or she listens to an MP3 player every day.

D．The mobile phone can also cause hearing problems if we don’t use it correctly.

【小题2】The underlined word “they” (Paragraph 4) most probably refers to ______.

A．scientists

B．MP3 players

C．mobile phones

D．teenagers

【小题3】Which might be the best title for this passage?

A．Turn your MP3 players down!	B．Never use MP3!
C．How to protect your hearing.	D．Young people’s hearing.

Millions of stars are travelling about in space. A few form groups which travel together, but most of them travel alone.
And they travel through a universe which is so large that one star seldom comes near to another. For the most important part each star makes its journey in complete loneliness, like a ship on an empty ocean. The ship will be well over a million miles from its nearest neighbour. From this it is easy to understand why a star seldom finds another anywhere near it.
We believe, however, that some two thousand million years ago, another star wandering(漫游) through space, happened to come near our sun just as the sun and the moon raised itstides(潮汐) on the earth, so this star must have raised tides on the surface of the sun. But they were very different from the small tides that are raised in our oceans; A large tidal(潮汐的) wave must have travelled over the surface of the sun, at last forming a mountain so high that we cannot imagine it. As the cause of the disturbance came nearer, so the mountain rose higher and higher. And before the star began to move away again, its tidal pull had become so powerful that this mountain was torn to pieces and thrown off small parts of itself into space.
These small pieces have been going round the sun ever since. They are the planets.
【小题1】Most stars are _________________________.

A．following a regular path in space

B．moving about without a fixed course

C．seldom wandering about in the universe

D．always travelling together

【小题2】Some two thousand years ago, the mountain on the sun was raised probably because _____________.

A．the star moved away from the sun

B．another star happened to come near the sun

C．the sun and the moon raised the tides on the earth

D．a large tidal of wave travelled over the surface of the sun

【小题3】The article suggests that _______________.

A．how space formed

B．our earth exists before the sun

C．no one knows where the earth comes from

D．our earth used to be a high mountain in the sun

【小题4】The expression “the cause of the disturbance” refers to ________.

A．the large tidal wave	B．the powerful tidal pull
C．the star coming near the sun	D．one of sun’s planets

【小题5】 In the article, the writer mainly wants to tell us ______________.

A．where the planets in the universe came from

B．how the high mountains were formed on the sun

C．that the universe is so large that we cannot imagine it

D．why the tides over the surface of the sun were so powerful

“Millions of young people will lose their hearing in five years if they listen to MP3 or MP4 players at a too high voice every day,” scientists say recently.
Do you often listen to MP3 players at a too high voice? Are you frightened to hear this?
The sizes of MP3 players are very small, but small MP3 players make it easy to take hundreds of songs with you. So many young people carry them and listen to music every day. MP3 players are very popular among students. 
The scientists say teenagers should be far from high volume (音量), including mobile phones’ noise. A study says, “High volume and long listening time can cause hearing problems.” They think if young people listen at more than 89 decibels (分贝) every day, they will lose their hearing in five years. A scientist said, “So many young people often use personal music players and mobile phones at a high voice. I am afraid that they may be losing their hearing.
So let’s turn our MP3 players down!
【小题1】According to the passage, which of the following is true?

A．Scientists tell young people to turn off their MP3 players.

B．Teenagers will lose their hearing if they listen to hundreds of songs in MP3 players.

C．A person will lose hearing in 5 years if he or she listens to an MP3 player every day.

D．The mobile phone can also cause hearing problems if we don’t use it correctly.

【小题2】The underlined word “they” (Paragraph 4) most probably refers to ______.

A．scientists

B．MP3 players

C．mobile phones

D．teenagers

【小题3】Which might be the best title for this passage?

A．Turn your MP3 players down!	B．Never use MP3!
C．How to protect your hearing.	D．Young people’s hearing.

Millions of people around the world cook their food on fire every day. People must spend lots of money on cooking fuel. However, there is a much easier and cheaper way to cook food using energy from the sun.
Sun-cookers have been used for centuries. A Swiss scientist made the first sun-cooker in 1777. Today, people are using sun-cookers in many countries around the world. People use them to cook food and to heat drinking water.
There are three kinds of sun-cookers. The first is a box cooker. It is designed with a special wall that collects sun-shine into the box. A box cooker is good for slow cooking of a lot of food.
The second kind of sun-cooker is a panel cooker. It has several flat walls that concentrate the sun-shine on the food. People can build panel cookers quickly. They do not cost much. In Kenya, for example, panel cookers cost just two dollars.
The third kind of sun-cooker is a parabolic cooker. It has rounded walls that concentrate sunlight into the bottom of the cooker. Food cooks quickly in parabolic cookers. However, these cookers are hard to make. They must be moved again and again to follow the sun. Parabolic cookers can also cause burns and eye injuries if they are not used correctly.
You can make sun-cookers from boxes or heavy paper. They will not catch fire. Paper burns at 232℃. A sun-cooker never gets hotter than that. Sun-cookers cook food at low temperatures over long periods of time. This allows people to cook food and do other things at the same time.
【小题1】What does the underlined word fuel mean?

A．燃料

B．菜谱

C．调料

D．粮食

【小题2】If you want to cook food quickly, which kind of sun-cooker is your best choice?

A．a box cooker	B．a panel cooker
C．a parabolic cooker	D．fire cooker

【小题3】Which kind of sun-cooker costs very little?

A．a box cooker	B．a panel cooker
C．a parabolic cooker	D．fire cooker

【小题4】Which of the following is TRUE?

A．The first sun-cooker was made by a Swiss soldier.

B．Sun-cookers often get hotter than 232℃.

C．Parabolic cookers can be dangerous sometimes.

D．It is more expensive to cook with a sun-cooker than on fire.

【小题5】What is the best title of this passage?

A．How to Be a Good Cook?	B．Cooking Meals With the Sun
C．How to Save Energy?	D．Different Ways of Cooking

Millions of stars are travelling about in space. A few form groups which travel together, but most of them travel alone.
And they travel through a universe which is so large that one star seldom comes near to another. For the most important part each star makes its journey in complete loneliness, like a ship on an empty ocean. The ship will be well over a million miles from its nearest neighbour. From this it is easy to understand why a star seldom finds another anywhere near it.
We believe, however, that some two thousand million years ago, another star wandering(漫游) through space, happened to come near our sun just as the sun and the moon raised its tides(潮汐) on the earth, so this star must have raised tides on the surface of the sun. But they were very different from the small tides that are raised in our oceans; A large tidal(潮汐的) wave must have travelled over the surface of the sun, at last forming a mountain so high that we cannot imagine it. As the cause of the disturbance came nearer, so the mountain rose higher and higher. And before the star began to move away again, its tidal pull had become so powerful that this mountain was torn to pieces and thrown off small parts of itself into space.
These small pieces have been going round the sun ever since. They are the planets.
【小题1】Most stars are _________________________.

A．following a regular path in space

B．moving about without a fixed course

C．seldom wandering about in the universe

D．always travelling together

【小题2】Some two thousand years ago, the mountain on the sun was raised probably because _____________.

A．the star moved away from the sun

B．another star happened to come near the sun

C．the sun and the moon raised the tides on the earth

D．a large tidal of wave travelled over the surface of the sun

【小题3】The article suggests that _______________.

A．how space formed

B．our earth exists before the sun

C．no one knows where the earth comes from

D．our earth used to be a high mountain in the sun

【小题4】The expression “the cause of the disturbance” refers to ________.

A．the large tidal wave	B．the powerful tidal pull
C．the star coming near the sun	D．one of sun’s planets

【小题5】 In the article, the writer mainly wants to tell us ______________.

A．where the planets in the universe came from

B．how the high mountains were formed on the sun

C．that the universe is so large that we cannot imagine it

D．why the tides over the surface of the sun were so powerful