According to the last paragraph, what is the ultimate reason for going to the gym?
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1 .The standard 90db requires 16 quiet hours of rest each day for ____.
A we wear contact lenses earlier B people will have worse hearing C keep us from suffering more noises D the ears to recover E have suffered a great damage F his nerve system is inefficient
2 .Ronald Reagan has to suffer permanent injury of hearing because some of the delicate hairs in his inner ear _______.
A we wear contact lenses earlier B people will have worse hearing C keep us from suffering more noises D the ears to recover E have suffered a great damage F his nerve system is inefficient
3 .Scientists think that by the year 2000, _____.
A we wear contact lenses earlier B people will have worse hearing C keep us from suffering more noises D the ears to recover E have suffered a great damage F his nerve system is inefficient
4 .We can keep our hearing health if ___________.
A we wear contact lenses earlier B people will have worse hearing C keep us from suffering more noises D the ears to recover E have suffered a great damage F his nerve system is inefficient
5 .Which of the following statements is nearest in meaning to the sentence "To sleep. Perchance to file?”?
A Does brain arrange memories in useful order during sleep? B Does brain have memories when one is sleeping? C Does brain remember files after one falls asleep? D Does brain work on files in sleep?
7 .Why is X-rays treatment called “radiotherapy”?
A Because the treatment involves nuclear radiation. B Because X-rays is in association with nuclear reaction. C Because the disease is treated by means of X-rays. D Because it is treated by means of radio.
8 .Why is X-rays called Roentgen rays?
A Because X means the unknown. B Because Roentgen was a very famous physicist. C Because Roentgen sounds very good. D Because Roentgen discovered X-rays.
9 .The word “by accident” (Para. 2) can be best replaced by ________.
A by design B by chance C on purpose D deliberately
10 .Why Roentgen named the new rays produced from the tube as X-rays?
A Because the letter X is special. B Because others give the name. C Because the letter X is the name of this ray itself. D Because the letter X stands for the unknown.
