四六級考試閲讀的備考筆記參考
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:ne 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,含有關係詞 because,although,not 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
-
(薦)考試作文4篇
在平平淡淡的學習、工作、生活中,説到作文,大家肯定都不陌生吧,通過作文可以把我們那些零零散散的思想,聚集在一塊。那麼你有了解過作文嗎?以下是小編整理的考試作文4篇,歡迎閲讀與收藏。考試作文篇1“新鮮出爐的月考成績,不要錢啊!”耳邊迴響着昨晚夢到的聲音,唉,老師改...
-
考試後感想作文9篇(薦)
在日常學習、工作或生活中,大家總免不了要接觸或使用作文吧,寫作文是培養人們的觀察力、聯想力、想象力、思考力和記憶力的重要手段。那麼你有了解過作文嗎?下面是小編為大家收集的考試後感想作文9篇,僅供參考,歡迎大家閲讀。考試後感想作文篇1這次期末考試,的確很失...
-
考試後感想作文精選(3篇)
在我們平凡的日常裏,大家或多或少都會接觸過作文吧,作文可分為國小作文、中學作文、大學作文(論文)。那麼,怎麼去寫作文呢?下面是小編收集整理的考試後感想作文3篇,僅供參考,希望能夠幫助到大家。考試後感想作文篇1考試如風,吹乾學生們額頭上辛勞的汗水;考試如雨,淋濕學生...
-
考試感受作文(必備9篇)
無論是在學校還是在社會中,大家都不可避免地要接觸到作文吧,寫作文可以鍛鍊我們的獨處習慣,讓自己的心靜下來,思考自己未來的方向。相信寫作文是一個讓許多人都頭痛的問題,以下是小編為大家整理的考試感受作文10篇,歡迎大家借鑑與參考,希望對大家有所幫助。考試感受作...