问题
选择题
挑选西瓜时，用手指在西瓜上弹几下，如果声音清脆，就知道是生瓜；如果声音较沉闷，就知道是熟瓜。医生常用叩诊术来检查人体内器官是否正常，脏器不正常与正常的叩诊声音是不同的。有趣的是300多年前，一个奥地利人用敲击酒桶的方法来判断桶中酒的多少。上述事例中都是根据声音的哪个共同特征来判断的？[ ]
A.响度
B.音调
C.音色
D.声速
答案
答案：B
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挑选西瓜时，用手指在西瓜上弹几下，如果声音清脆，就知道是生瓜；如果声音较沉闷，就知道是熟瓜。医生常用叩诊术来检查人体内器官是否正常，脏器不正常与正常的叩诊声音是不同的。有趣的是300多年前，一个奥地利人用敲击酒桶的方法来判断桶中酒的多少。上述事例中都是根据声音的哪个共同特征来判断的？[ ]
A.响度
B.音调
C.音色
D.声速
答案：B
| 完形填空。 | |||
| Mr. and Mrs. Harris had always spent their summer holidays in a small hotel at the seaside near their hometown . One year, however, Mr. Harris made a lot of __1__ in his business, __2__ they decided to go to a foreign country and stay at a really good __3__ . They flew to Rome, and __4__ at a 5-star hotel in the evening. They thought that they would have to go to bed hungry, because in that __5__ hotel they had been used to stay in the past, no meals were served __6__ seven in the evening. They were __7__ to be told that the hotel served dinner until ten. "Then what are the times __8__ meals?" asked Mrs. Harris. "Well, madam, we serve breakfast from seven to eleven, lunch from twelve to three, __9__ from four to five, and dinner from six to ten. " "But that hardly __10__ any time for us to see the city!" said Mrs. Harris. | |||
| ( ) 1. A. mistakes ( ) 2. A. but ( ) 3. A. hotel ( ) 4. A. stayed ( ) 5. A. small ( ) 6. A. on ( ) 7. A. tired ( ) 8. A. with ( ) 9. A. drink ( ) 10. A. takes | B. time B. so B. place B. got B. big B. after B. interested B. on B. tea B. does | C. friends C. though C. city C. arrived C. foreign C. during C. surprised C. at C. beer C. has | D. money D. yet D. restaurant D. reached D. good D. until D. worried D. of D. food D. leaves |