Questions 16 to 20 are based on the following passage:
16. According to the author, the sonar system of bats
is an example of the idea that ____.
A) this is the age of technological triumphs
B) modern machines are inefficient
C) living mechanisms are often more efficient than man -made machines
D) artificial imitations are always less efficient than living mechanisms
17. The author suggests that the sonar system of bats ____.
A) was at the height of its perfection 50 million years ago
B) is better than man-made sonar because it has had 50 million years to be be refined
C) should have been discovered by man many years ago
D) is the same as it was 50 million years ago
18. Echo location in this article means the _____.
A) location of echoes
B) ability to determine where an echo comes from
C) scientific term for sound waves
D) ability to locate unseen objects by echoes
19 This article was written to illustrate ____.
A) the deficiencies of man-made sonar
B) the dependence of man upon animals
C) that we are living in a machine age
D) that the sonar system of bats is remarkable
20. The following is the main point of the article:____
A) A bat will catch hundreds of insects in a single hour.
B) There is a perfection in nature which sometimes can not be matched by mans creative efforts.
C) The phrase blind as a bat is valid.
D) Sonar and radar systems of man are inefficient.
Questions 16 to 20 are based on the following passage:
In these days of technological triumphs, it is well to remind ourselves from time to time that living mechanisms are often incomparably more efficient than their artificial imitations. There is no better illustration of this idea than the sonar system of bats. It is billions of times more efficient and more sensitive than the radars and sonars designed by man.
注:1.triumph 胜利,成功 2.it is well to 有必要
3.incomparably 不可比地 4.第一句主题句:天然胜于人工 artificial 人工的5.illustration 例证,本段末句强烈结论
Of course, the bats have had some 50 million years of evolution to refine their sonar. Their physiological mechanisms for echo location, based on all this accumulated experience, therefore deserve our thorough study and analysis.
注:1.refine 提炼、改善
2.二段首句是对首段末句的解释
3.50 million years对应的是第17小题
17. The author suggests that the sonar system of bats ____
A) was at the height of its perfection 50 million years ago
B) is better than man-made sonar because it has had 50 million years to be be refined
C) should have been discovered by man many years ago
D) is the same as it was 50 million years ago
注:B 选项体现一段结尾和二段开头,应该优选,含有关系词 because,although,not only...but also, as well as 的应该优选
To appreciate the precision of the bats echo location, we must first consider the degree of their reliance upon it. Thanks to sonar, an insect-eating bat can get along perfectly well without eyesight. This was brilliantly demonstrated by the Italian naturalist Lazzaro Spallanzani. He caught some bats in a bell tower, blinded them and released them outdoors. Four of these blind bats were recaptured after they had found their ways back to the bell tower, and on examining their stomachs contents, Spallanxani found that they had been able to capture and eat flying insects. We know from experiments that bats easily find insects in the dark of night, even when the insects make no sound that can be heard by human ears. A bat will catch hundreds of softbodied silent flying insects in a single hour. It will even detect and chase pebbles tossed this is the age of technological triumphs
B) modern machines are inefficient
C) living mechanisms are often more efficient than man -made machines
D) artificial imitations are always less efficient than living mechanisms
注:1.第一段 illustration 等同 example
2.D选项的always与文章中的often含义是不同的。
In these days of technological triumphs, it is well to remind ourselves from time to time that living mechanisms are often incomparably more efficient than their artificial imitations. There is no better illustration of this idea than the sonar system of bats. It is billions of times more efficient and more sensitive than the radars and sonars designed by man.
17. The author suggests that the sonar system of bats ____
A) was at the height of its perfection 50 million years ago
B) is better than man-made sonar because it has had 50 million years to be be refined
C) should have been discovered by man many years ago
D) is the same as it was 50 million years ago
注:B 选项体现一段结尾和二段开头,应该优选,含有关系词 because,although,not only...but also, as well as 的应该优选
18. Echo location in this article means the _____.
A) location of echoes
B) ability to determine where an echo comes from
C) scientific term for sound waves
D) ability to locate unseen objects by echoes
注:1.A 为干扰选项,过于表面化
2.B 项为等价选项所以为错误
To appreciate the precision of the bats echo location, we must first consider the degree of their reliance upon it. Thanks to sonar, an insect-eating bat can get along perfectly well without eyesight. This was brilliantly demonstrated by the Italian naturalist
Lazzaro Spallanzani. He caught some bats in a bell tower, blinded them and released them outdoors. Four of these blind bats were recaptured after they had found their ways back to the bell tower, and on examining their stomachs contents, Spallanxani found that they had been able to capture and eat flying insects. We know from experiments that bats easily find insects in the dark of night, even when the insects make no sound that can be heard by human ears. A bat will catch hundreds of softbodied silent flying insects in a single hour. It will even detect and chase pebbles tossed the deficiencies of man-made sonar
B) the dependence of man upon animals
C) that we are living in a machine age
D) that the sonar system of bats is remarkable
注:写作目的题型,写作目的=写作动机+文章主题,看文章主题第一句话
20. The following is the main point of the article:____
A) A bat will catch hundreds of insects in a single hour.
B) There is a perfection in nature which sometimes can not be matched by mans creative efforts.
C) The phrase blind as a bat is valid.
D) Sonar and radar systems of man are inefficient.
罗尔斯·罗伊斯可能被提起公诉
Positive Mental Attitude
The Powerful Gift of Love
苹果地图业务高管遭解雇
ViSparsh:让盲人丢掉手杖
男性比女性更易获得“热门”职位
以色列开枪一名巴勒斯坦人被打死
巴克莱纳普:2013年美股将先抑后扬
A Chilling Thrill
无论何时何地学会爱你自己
The wholeness of life
在书店里度过的时光
快来体验免签证北京游
Today I begin a new life 3
华为计划在诺基亚后院扩张业务
埃及政治僵局或将危及经济前景
My Irreplaceable Treasure 2
江南Style:Youtube观看次数最多视频
朝鲜因技术缺陷推迟火箭发射
十句人生哲理
美国共和党的新路在何方?
格鲁吉亚给日本的教训
英美身份认同的差异
April Showers Bring May Flowers
叙利亚政府强拆大马士革支持叛乱社区
Libor操纵案 英国警方逮捕三人
忘掉财政悬崖
A Friend in Need
Free to fly with the wind
Peeling Away Artifice For the Pure Original
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |