( ) 11. What kind of hearing loss mentioned in the passage is the most serious?
A) The first kind. B) The second kind. C) The third kind. D) None.
( )12. Hearing loss caused by damage to can often be restored.
A) the outer ear B) the inner ear C) the nerves D) the brain
( )13. Which of the following is NOT a source of deafness?
A) loud music B) bodily disability C) accidents D) some drugs
( )14. It can be inferred from the passage that .
A) developed countries are more noisy
B) nothing can be done to prevent loss of hearing
C) old people suffer less from hearing loss
D) 16 million Americans have lost their hearing
( )15. Which of the following statements is NOT true?
A) Deafness is very common in America
B) Hearing nerves are most important to one's hearing.
C) There are different causes to hearing loss.
D) Hearing aids can help deaf people hear clearly.
Quotations 16 to 20 based on the following passage:
At the end of the 7 weeks, the step-test was again given to both groups of subjects, and their pulses taken. he post-exercise pulse rates of subjects in the experimental group were found to have decreased an average of 30 heart beats per minute, with the lowest deceased 28 and the highest decrease 46. The pulse rate of subjects in the control group remained the same or changed no more than 4 beats, with an average difference between the initial and final tests of zero.
( ) 16. The step-test was given
A) after each exercise period
B) at the beginning and at the end of the seven week period
C) only once, at the beginning of the seven week period
D) twice to the men in Group A and once to the men in Group B
( ) 17. When were pulse rates taken?