學術類閲讀原文英語
the first one just like this
Creatures of the Thermal Vents
by Dawn Stover
The three-person submersible Alvin sank through the cold, dark waters of the Pacific Ocean for more than an hour, finally touching down on the sea floor more than 8,000 feet below the surface. It was December 1993, and the scientists inside the sub had come to this stretch of the East Pacific Rise, an underwater mountain range about 500 miles southwest of Acapulco, Mexico, to inspect a recently formed hydrothermal vent - a fissure in the ocean bottom that leaks scalding, acidic water.
Peering out through the subs tiny windows, the visitors were astonished to see thickets of giant tube worms, some four feet tall. The tail ends of the worms were firmly planted on the ocean floor, while red plumes on the other ends swayed like a field of poppies. Alvin had brought researchers to the same spot less than two years earlier, when they had seen none of these strange creatures. Measurements at the site have since shown that individual tube worms can increase in length at a rate of more than 33 inches per year, making them the fastest-growing marine invertebrates. That means tube worms can colonize a vent more rapidly than scientists once thought.
The giant tube worm is one of the most conspicuous members of a diverse community that forms around hydrothermal vents. Scientists once thought that no living thing could survive the harsh combination of toxic chemicals, high temperatures, high pressures, and total darkness at these vents. But in 1977, researchers diving in Alvin discovered tube worms and other bizarre organisms thriving at a vent off the Galapagos Islands. Similar communities have since been found at several hundred hot spots around the world. These creatures are like nothing else on Earth.
-
語文二年級下冊教學設計(精選22篇)
作為一名辛苦耕耘的教育工作者,往往需要進行教學設計編寫工作,藉助教學設計可以促進我們快速成長,使教學工作更加科學化。怎樣寫教學設計才更能起到其作用呢?下面是小編精心整理的語文二年級下冊教學設計(精選22篇),僅供參考,歡迎大家閲讀。語文二年級下冊教學設計篇1...
-
國中語文教學工作總結(通用13篇)
東流逝水,葉落紛紛,荏苒的時光就這樣悄悄地,慢慢地消逝了,經過這段時間辛勤付出,我們一定積累了不少經驗和教訓,是不是需要好好寫一份教學總結呢?在寫之前,要先考慮好內容和形式喔,下面是小編為大家整理的國中語文教學工作總結,歡迎閲讀與收藏。國中語文教學工作總結篇1...
-
校學生會宣傳部工作總結通用8篇
總結是對取得的成績、存在的問題及得到的經驗和教訓等方面情況進行評價與描述的一種書面材料,他能夠提升我們的書面表達能力,不如我們來制定一份總結吧。那麼如何把總結寫出新花樣呢?下面是小編整理的校學生會宣傳部工作總結,歡迎閲讀與收藏。校學生會宣傳部工作總...
-
開學第一課觀後感(精選33篇)
當品味完一部作品後,這次觀看讓你有什麼領悟呢?是時候抽出時間寫寫觀後感了。那麼我們如何去寫觀後感呢?下面是小編幫大家整理的開學第一課觀後感,供大家參考借鑑,希望可以幫助到有需要的朋友。開學第一課觀後感篇1每年的《開學第一課》是我最愛看的節目,我聽從班主...