Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

NOISE POLLUTION

Noise is more than a mere nuisance. At certain levels and durations of exposure, it can cause physical damage to the eardrum, and (31) ________in temporary or permanent hearing loss. In addition to causing hearing loss, (32) ________noise exposure can also (33) ________blood pressure and pulse rate, cause irritability, anxiety, and mental fatigue, and interfere with sleep, recreation, and personal communication. Noise pollution is, therefore, (34________importance in the workplace and in the community.

Noise effects can be (35) ________by a number of techniques, for example, increasing the distance or blocking the path between the noise source and the recipient, reducing noise level at the source, and protecting recipients with earplugs or earmuffs

Điền vào ô số 34