Our sense of hearing is one of the most important means of knowing what is going on around us. We are warned of danger by sounds. The sounds of music please us. Sound has a waste product, too, in the form of noise. Noise has been called unwanted sound. Noise is growing and it may get much worse before it gets any better.
Scientists, for several years, have been studying how noise affects people and animals and are alarmed by what they have learned.
Peace and quiet are becoming harder to find. Noise pollution is no joke. It is a threat that should be looked at carefully.
Sound is measured in units called decibels （分贝）. At a level of 140 decibels people feel pain in their ears.
Trucks, buses, motorcycles, airplanes, boats, and factories all make noise. This noise bothers not only our ears, but our minds and bodies as well.
There is a saying about "it is so noisy that you can't hear yourself think". Doctors who study noise believe that we must be able to hear ourselves think most of the time. If we don't, we may have headaches, other aches and pains, or even mental problems. Noise adds even more tension to a society which already faces too much stress.
49．The sense of hearing _______.
A．makes people feel angry   
B．makes people want to dance
C．helps people to know what is happening around them
D．is something harmful to people
50．When sound is turned into noise, _______.
A．people become ill                  B．it makes people forget the past
C．people don't know how to deal with it  D．it becomes a kind of pollution
51．Why does the passage say " Peace and quiet are becoming harder to find " ?
A．Sounds of over 140 decibels are common these days.
B．There are always wars going on in the world.
C．The world is making more and more noise.
D．All kinds of machines make noises.
52．Which of the following statements is TRUE?
A．Scientists are warning people noise can be harmful.
B．It's possible for man to get rid of all noises.
C．Sounds under 140 decibels are not considered to be noise.
D．Society has become more lively because there is noise now. 

Pollution is a growing problem that is facing the international community, but even the actions that we take can make a difference. Littering is creating environmental problems all over the world and is often created by careless individuals. If we guard our actions against careless littering we can ensure a better world for everyone.

Littering is a severe problem in many countries around the world. For example, the African city of Kampala, the capitol of Uganda, is suffering from the consequences of littering. For many years the city’s poor didn’t have a proper way to dispose of trash, so garbage filled the streets.  Over the years much of the plastic garbage would slowly be pushed into the ground. This plastic litter doesn’t allow rain water to seep into the ground and has caused flooding. In many of Kampala’s poor neighborhoods whenever it rains people’s homes become flooded with water.  This water is often dirty and has allowed diseases to spread. This flooding has become so bad that the Ugandan government has banned plastic bags in the entire country to stop the littering.

Trash often finds its way into the water. Today the world’s oceans are believed to have millions of tons of trash floating around in them. This creates a problem for wildlife because they may accidentally eat the trash and die from it. Scientists have found on very remote islands baby birds that have died because their stomachs were full of trash. Fish often get tangled in plastic and will also die. Our actions in our own countries affect the most remote parts of the planet.

We can all be part of the solution to stop this pollution, just by preventing careless littering.  If you need to throw something away, don’t toss it over your shoulder — find a trash can. If you see a friend littering tell them not to. By making this small change we can create a better world for all.

1.What does the author say is the cause of littering? (No more than 4 words)

________________________________________________________________________

2.How does trash cause flooding? (No more than 10 words)

_______________________________________________________________________

3.How can local actions affect the international environment? (No more than 12 words)

________________________________________________________________________

4.What does the author suggest to prevent littering? （No more than 7 words）

________________________________________________________________________

1.    Our workmate has been in danger. We’re all c__________ about his health.

2.    It made her u________ that she didn’t do well in the final exam.

3.    Air pollution is one of the problems that we can’t afford to i_______

4.    Mother can’t r             her three babies because they look the same.

5.    Many words and              (词语) in British English came from American English.

6.    We are not satisfied with her a_____________ to the poor.

7.    He seems to be doing nothing , but _____________ ( 实际上 ) he is just waiting for his chance.

8.    Jane and Mary are good friends; the former is a teacher, the l___________ is a nurse.

9.    Children are_______(喜欢) of going camping alongside the seashore.

10.  Li Yang can speak English _______（流利地）.

 Our sense of hearing is one of the most important means of knowing what is going on around us. We are warned of danger by sounds. The sounds of music please us. Sound has a waste product, too, in the form of noise. Noise has been called unwanted sound. Noise is growing and it may get much worse before it gets any better.

Scientists, for several years, have been studying how noise affects people and animals and are alarmed by what they have learned.

Peace and quiet are becoming harder to find. Noise pollution is no joke. It is a threat that should be looked at carefully.

Sound is measured in units called decibels （分贝）. At a level of 140 decibels people feel pain in their ears.

Trucks, buses, motorcycles, airplanes, boats, and factories all make noise. This noise bothers not only our ears, but our minds and bodies as well.

There is a saying about "it is so noisy that you can't hear yourself think". Doctors who study noise believe that we must be able to hear ourselves think most of the time. If we don't, we may have headaches, other aches and pains, or even mental problems. Noise adds even more tension to a society which already faces too much stress.

49．The sense of hearing _______.

A．makes people feel angry   

B．makes people want to dance

C．helps people to know what is happening around them

D．is something harmful to people

50．When sound is turned into noise, _______.

A．people become ill                  B．it makes people forget the past

C．people don't know how to deal with it  D．it becomes a kind of pollution

51．Why does the passage say " Peace and quiet are becoming harder to find " ?

A．Sounds of over 140 decibels are common these days.

B．There are always wars going on in the world.

C．The world is making more and more noise.

D．All kinds of machines make noises.

52．Which of the following statements is TRUE?

A．Scientists are warning people noise can be harmful.

B．It's possible for man to get rid of all noises.

C．Sounds under 140 decibels are not considered to be noise.

D．Society has become more lively because there is noise now. 

Our sense of hearing is one of the most important means of knowing what is going on around us. We are warned of danger by sounds. The sounds of music please us. Sound has a waste product, too, in the form of noise. Noise has been called unwanted sound. Noise is growing and it may get much worse before it gets any better.

Scientists, for several years, have been studying how noise affects people and animals and are alarmed by what they have learned.

Peace and quiet are becoming harder to find. Noise pollution is no joke. It is a threat that should be looked at carefully.

Sound is measured in units called decibels （分贝）. At a level of 140 decibels people feel pain in their ears.

Trucks, buses, motorcycles, airplanes, boats, and factories all make noise. This noise bothers not only our ears, but our minds and bodies as well.

There is a saying about "it is so noisy that you can't hear yourself think". Doctors who study noise believe that we must be able to hear ourselves think most of the time. If we don't, we may have headaches, other aches and pains, or even mental problems. Noise adds even more tension to a society which already faces too much stress.

1．The sense of hearing _______.

 A．makes people feel angry   

 B．makes people want to dance

 C．helps people to know what is happening around them

 D．is something harmful to people

2．When sound is turned into noise, _______.

 A．people become ill                   B．it makes people forget the past

 C．people don't know how to deal with it  D．it becomes a kind of pollution

3．Why does the passage say " Peace and quiet are becoming harder to find " ?

A．Sounds of over 140 decibels are common these days.

B．There are always wars going on in the world.

C．The world is making more and more noise.

D．All kinds of machines make noises.

4．Which of the following statements is TRUE?

A．Scientists are warning people noise can be harmful.

B．It's possible for man to get rid of all noises.

C．Sounds under 140 decibels are not considered to be noise.

D．Society has become more lively because there is noise now.