এম এ হামিদ খান
সহকারী অধ্যাপক, ইংরেজি বিভাগ, ধনবাড়ী কলেজ, টাঙ্গাইল
প্রধান পরীক্ষক: মাধ্যমিক ও উচ্চ মাধ্যমিক শিক্ষা বোর্ড, ঢাকা।
E-mail: [email protected]
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সুপ্রিয় পরীক্ষার্থী বন্ধুরা,
আন্তরিক ভালবাসা, প্রীতি ও শুভেচ্ছা জানবে। আশা করি ভাল আছ। বর্তমান বিশ্ব পরিবেশে শব্দ দূষণ একটি মারাত্মক সমস্যা। শহর এলাকায় জনসংখ্যার ক্রমবৃদ্ধি এবং দৈনন্দিন জীবনে যানবাহন বা যন্ত্রপাতির ক্রমবর্ধমান ব্যবহারের কারণে আমাদের চারপাশে শব্দের মাত্রা বেড়ে চলছে যা আমাদের স্বাভাবিক জীবন যাপনকে ব্যাহত করে থাকে। আমাদের আজকের Seen Comprehension-এ সমস্যার কথাই আলোকপাত করা হয়েছে।
PART-A: SEEN COMPREHENSION
Read the passage below and answer questions 1-4
The unit by which the loudness of sound measured is called a decibel. According to the United Nations (UN), the normal tolerance limit of sound is 45 decibels. When the vibratio9n 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 noise3. 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 every day life there had been a general increase in the level of sound around us. On an average, people in the cities are 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 developed countries are trying to control sound pollution by careful town planning and developing public awareness. In Holland, schools are nit allowed near airport and houses which are situated near airport and houses which are situated near airports are provided with special types of insulation to limit the sound heard inside the buildings.
1. Choose the right word to complete each sentence:
a) 45 decibels is the tolerable/intolerable/harmful limit of sound.
b) Noise is pleasing/sharp/tolerable.
c) Sound means a vibration of a level which is pleasant/normal/musical.
d) The Japanese study considers the life of a primary school teachers easy/difficult/noisy,
e) Sound pollution can be disciplined/regulated/influenced by proper town planning.
Answer: a) tolerable b) sharp c) pleasant d) noisy e) disciplined.
2. True/False? If false, give the correct information:
a) Sound pollution is not created if it does not go up to 70 decibels.
b) People in cities live in pleasant sound.
c) Housewives in the city are hardly affected by sound.
d) Mass consciousness is a vital factor in controlling sound pollution.
e) Noise is beyond the control of man.
Answer: a) True, b) False. People in cities live in unpleasant sound,
c) False. Factory workers, truck drivers and primary school teachers are seriously affected by sound, d) True, e) False. Noise is within the control of man.
3. Fill in the gaps with the correct form of the words. Add any preposition if necessary:
a) Sound pollution greatly (affect)..........our hearing.
b) It is high time we (control)...........sound pollution.
c) A decibel is the unit for the (measure)..........sound.
d) We are (expose)...........harsh and sharp sound in cities.
e) Sound pollution is (serious) .............harmful for human beings.
Answer: a) affect b) controlled c) measuring of d) exposed to e) seriously.
4. Make a list of five things that cause sound pollution.
Answer: i) Growth of urban population ii) The increasing use of machines iii) Factory work iv) Truck driving v) Sound produced in the primary school.
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