Before the eighteenth century, botany was merely a branch of medicine. Until then, mostly doctors and surgeons studied herbs. Attempts had been made by others to classify plant species into groups, but the breakthrough came with the work of Carl Lin

发表于:2018-12-04 / 阅读(51) / 评论(0) 分类 人教全日制普通高中英语(必修)高三(全一册)

图片1 pedal n. 踏板v. 踩的踏板 例句:He pushed hard on the brake pedal to avoid a collision. 他使劲踩下煞车踏板以避免撞车。 expedite v. 加快,派出adj. 畅通的,迅速的 例句:The builders promised to expedite the

发表于:2018-12-30 / 阅读(74) / 评论(0) 分类 漫画搞定六级词汇(文本+音频)

By Melinda Smith Washington 09 August 2007 The World Health Organization says a mother's milk is the perfect food for a newborn baby. But worldwide statistics show that breastfeeding is frequently abandoned right after birth. VOA's Melinda Smith ha

发表于:2019-01-11 / 阅读(86) / 评论(0) 分类 2007年VOA标准英语(八月)

-Here we are at the bottom of one of the shafts. It's a lot darker than it would have been in the Neolithic, because at moment there's a modern concrete cover just to protect the archaeology. The devision that would be open to sky, so the sun would b

发表于:2019-01-23 / 阅读(209) / 评论(0) 分类 探索与发现2015年

Over the hunting of humpback whales in south Pacific,Deff said it wasnt convinced that Japanese mission was really necessary for scientific research..the whaling fleets says sale today environmental campaigners are planning to intercept this Commerci

发表于:2019-01-30 / 阅读(81) / 评论(0) 分类 英伦广角

Earlier, we spoke to Zhang Beichen, a senior member of China's Antarctic Scientific Expedition on board the icebreaker Xuelong. He was also on the ship when the Xuelong freed itself. He said there was a lot of excitement when the ship finally got fre

发表于:2019-02-03 / 阅读(211) / 评论(0) 分类 CCTV9英语新闻2014年01月

An exhibition of historic Antarctic photographs opened at Canterbury museum in Christchurch today. Some of the photos were taken during Captain Scotts journey to the South Pole 100 years ago while the other photos were of Shackletons expedition from

发表于:2019-02-07 / 阅读(72) / 评论(0) 分类 新西兰英语

Topics: Famous Americans: Sacagawea; NASCAR racing; to take its toll (on someone); you are/is; whatever versus whatsoever Words: to leave your mark on (something) expedition uncharted territory trapper to negotiate racetrack ratings to sanction serie

发表于:2019-02-23 / 阅读(56) / 评论(0) 分类 美语听力 English Cafe

A Russian mini-submarine reached the bottom of Lake Baikal, setting a record for the deepest dive in a lake. The Mir-2 has reached the bottom of Lake Baikal at a depth of 1,680 meters (5,512 feet), ITAR-TASS reported from the barge where the submarin

发表于:2019-02-23 / 阅读(61) / 评论(0) 分类 英语时差8,16