四六級考試閱讀的備考筆記參考

四六級考試閱讀的備考筆記參考

　　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 提煉、改善

　　2.二段首句是對首段末句的解釋

　　3.50 million years對應的是第17小題

　　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 選項體現一段結尾和二段開頭，應該優選，含有關系詞 because,although,not only...but also, as well as 的應該優選

　　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

【四六級考試閱讀的備考筆記參考】相關文章：

雅思閱讀考試備考方法07-04

雅思閱讀考試備戰經典筆記07-04

托業中有什么閱讀考試及備考方法07-04

當考研遇上四六級考試07-04

名師點評四六級考試07-04

大學四六級考試的推理技巧07-04

如何應對四六級聽力考試06-15

雅思口語考試備考誤區07-04

四六級終極備考指南-最后一天看這就夠了07-08

愛的教育閱讀筆記07-22