2.过程与方法 　通过实验探究，体验音调与频率、响度与振幅之间的关系；通过体验和观察，了解防治噪声的思路.

1.知识与技能　 了解乐音的特性；知道影响乐音的三要素；了解噪音的来源、危害及防治；知道分贝的含义.

55. By saying “the conclusions to be drawn are obvious”, the writer means that ______.

　 　A. women’s changeableness in their choice of clothing is often laughed at.

B. women are better able to put up with discomfort.

C. men are also exploited greatly by fashion designers.

54. According to the passage, which of the following statements is TRUE?

　　A. New fashions in clothing are created for the commercial exploitation of women.

B. The constant changes in women’s clothing reflect their strength of character.

C. The fashion industry makes an important contribution to society.

D. Fashion designs should not be encouraged since they are only welcomed by women.

53. The writer would be less critical if fashion designers placed more stress on the _____ of clothing.

　 　A. cost　　　 B. appearance　　　　 C. comfort　　　　 D. suitability

52. To the writer, the fact that women change their old-fashioned dresses is seen as ______.

　　A. a quality of instability.　　　　　　　

B. a waste of time.

C. an expression of taste.　　　　　　　

D. an expression of creativity.

51. Designers and big stores always make money ______.

　 　A. by mercilessly exploiting women workers in the clothing industry.

B. because they are capable of predicting new fashions.

C. by constantly changing the fashions in women’s clothing.

D. because they always improve quality of women’s clothing.

50. The best title for this passage is probably _______.

　 A. Forgiveness.　　　　　　　　　　　　 B. Forgiveness Is Good for Health.

C. A Secret to Keeping Health.　　　　　　 D. Anger Is Bad for Health.

C

If women are mercilessly exploited(剥削) year after year, they have only themselves to blame. Because they tremble at the thought of being seen in public in clothes that are out of fashion, they are always taken advantage of by the designers and the big stores. Clothes which have been worn only a few times have to be put aside because of the change of fashion. When you come to think of it, only a woman is capable of standing in front of a wardrobe packed full of clothes and announcing sadly that she has nothing to wear.

Changing fashions are nothing more than the intentional creation of waste. Many women spend vast sums of money each year to replace clothes that have hardly been worn. Women who cannot afford to throw away clothing in this way, waste hours of their time altering the dresses they have. Skirts are lengthened or shortened; necklines are lowered or raised, and so on.

No one can claim that the fashion industry contributes anything really important to society. Fashion designers are rarely concerned with vital things like warmth, comfort and durability(耐用). They are only interested in outward appearance and they take advantage of the fact that women will put up with any amount of discomfort, as long as they look right. There can hardly be a man who hasn’t at some time in his life smiled at the sight of a woman shaking in a thin dress on a winter day, or delicately picking her way through deep snow in high-heeled shoes.

When comparing men and women in the matter of fashion, the conclusions to be drawn are obvious. Do the constantly changing fashions of women’s clothes, one wonders, reflect basic qualities of instability(不稳定)? Men are too clever to let themselves be cheated by fashion designers. Do their unchanging styles of dress reflect basic qualities of stability and reliability? That is for you to decide.

49. Which of the following is NOT mentioned in this passage?

　 A. People who are able to forgive feel less stress.

B. People who are able to forgive feel less depression.

C. People who are able to forgive have fewer problems on sleeping.

D. People who are able to forgive feel less tired.

48. The underlined phrase “holding on to” in this passage possibly means“______”.

　 A. removing.　　 B. keeping up.　　 C. getting rid of.　　 D. learning about.