HSC-2014 ENG-1ST

The unit by which the loudness of sound is measured is called a decibel. According to the UN, the normal tolerance limit of sound is 45 decibels. When the vibration of sound is at a tolerable, pleasant level, it is simply called sound. But when it is sharp and harsh to the ears it becomes noise. Serious harm can be caused to people if they are regularly exposed to sounds exceeding 70 decibels. Because of the growth of urban population and the increasing use of machines in our everyday life there increasing use of machines in our everyday life there has been a general increase in the level of sound around us on an average, people in the cities exposed to sound ranging from 30 to 90 decibels or even more. A study in Japan has found that housewives who live in the city were exposed to almost the same amount of sound that a factory worker was exposed to at his/her workplace. The occupations that the study found to be the noisiest were factory work, truck driving and primary school teaching. Many development countries are trying to control sound pollution by careful town planning and developing public awareness. In Holland schools are not allowed near airports and houses which are near airports are provided with special types of insulation to limit the sound heard inside the buildings.

1.    Choose the correct option to complete each sentence.

a)    According to the passage, the noun form of the word ‘expose’ is exposition/exposure/expression.

b)    Sound pollution is more acute in the pastoral/rural/urban areas.

c)    Decibel is connected with phonetics/psychology/physics.

d)    The increasing use of machines has created cacophony/symphony/ harmony.

e)    The normal forbearance/understanding/pleasant limit of sound is 45 decibels.

2.    True /false? If false, give the correct answer.

a)    A pedagogue in a primary school in Japan undergoes sound pollution.

b)    Intolerable level of sound is called sound.

c)    Noise is beyond the control of man.

d)    Decibel is a scale of measuring sound.

e)    Truck drivers are free from sound pollution.

3.       Use the right form of words in the brackets. Add any preposition if necessary.

a)       Decibel is a unit of the (measure) _____ sound.

b)       House near airports should (insulator) ____ sound and noise.

c)       Schools (not permission) _____ near airports in developed countries.

d)       Sound pollution is very (harm) _____ people.

e)       We all are looking forward to (minimal) ____ sound pollution.

4.       Make a list of five things that cause sound pollution.

Read the following passage and answer the question no 5-8

In recent years, there have been many alarming reports that the world's climate is undergoing a significant change. All these reports provide strong evidence that world temperatures are increasing day by day. This increase in global warming is caused by increased amounts of carbon dioxide around the earth Most climatologists believe that the greenhouse effect is the likely cause of this global warming. What is the greenhouse effect? It is the gradual warming of the air surrounding the earth as a result of heat being trapped by environmental pollution This is exemplified by the destruction burning down of tropical rain forests, by traffic that clogs up city streets, by the rapid growth of industry, the use of chlorofluorocarbons (CFCs) in packaging and manufacturing commercial products, the use of detergents such as washing powder and washing-up liquid and so on. The oceans are also said to be affected both because of human waste and because of pollution caused by industrial waste products, oil seeping from damaged super tankers and from other maritime disasters. However, the main culprits for global warming are carbon dioxide gas, produced by- the burning of fossil fuels and forests, and-pollutants such as methane and chlorofluorocarbons. Climatologists predict that midway through the next century, temperatures may have risen by as much as 4°c. This could catastrophically reduce mankind's ability to grow food, destroy or severely damage wildlife and wilderness, raise sea levels and thereby flood coastal areas and farmland. The alarming news about Bangladesh is that as a result of the rise of the sea level the lower southern part of the country may one day go under water

5.    Write short answers to the questions.

a)    What is the alarming report?

b)    What do the reports provide?

c)    How is carbon di-oxide produced?

d)    What do the climatologists predict about Bangladesh.

e)    How does global warming affect wildlife and wilderness?

6.    Fill in the gaps with suitable words.

The greenhouse effect (a) _____ the gradual warming of the air surrounding the earth, which (b) ____ from the heat trapped by the(c) ______ of the environment. (d) _____ other countries of the world but also Bangladesh are victims of this greenhouse effect.  There is an (e) ____news for Bangladesh that the lower part of the country may one day go under water.

7.    Summarise the passage five sentences

8.       Based on your reading of the passage make notes in each of h of the boxes in the flow chart showing the result of the greenhouse effect.

 

9.       Fill in the gaps with suitable words from the box

spelling	language	alphabetic	find	syllable	Neglect
noun	life	synonyms	picture	friends	Antonyms

Dictionaries are very important books in the (a)____ of a people. A dictionary lists the words in a language (b)_____, so that readers may(c) _____ them easily. A dictionary entry gives us the accepted (d)____ of a word, its division into (e)______, its pronunciation, its origins, and its meanings. Sometimes a dictionary also provides(f) ______, or opposites of a word. In addition, if the word is a (g)_____ that describes a visible thing, the dictionary may provide a (h)_____ of it. Dictionaries of the past, present and future can become your teachers and good(i) ______. Don’t(j) ______ them.

10.   Fill in the each gap with an appropriate word.

Sports are a popular form of (a)____. Many international (b)_____ events are organized from time to time. Most of those events are (c)____ by multinational manufacturing companies and business firms. They (d)_____ for the sport events in exchange for the right to (e)______ their products during those events. These events are (f)_____ worldwide by satellite and people all (g)_____the world watch them (h)____. As a result, the sponsors’ products receive maximum media (i)_____ thus giving companies international (j)_____.