文档介绍：Unit 2 & Education
What is Online Learning?
In an online lesson, puter displays material in response to a learner’s request. puter promotes the learner for more information and presents appropriate material based on the learners response.
The material can be traditional lessons and tests that are transcribed into puter program. The material can also be plex program that tracks users’ input and suggests appropriate leaning material. Or the material can a work session that occurs through puter chat, learning through the interaction.
The material can be presented as texts, graphics, audio, video, or bination of these.
Now, Winter Park high school, a high school in Florida, is an online school, has 250 students who are taking lessons at home.
Ⅰ vocabulary and phrases
Extend v.
①( of space, time, land) to reach, stretch or continue 延伸,继续
eg. I decide to extend our visit by a day.
② to open or straighten out; 拉开,伸直
eg. He extended the legs of the folding table.
③ to give 给予,提供
eg. Extend an invitation to sb
horizon n.
① the line far away where the land or sea to meet the sky. 地平线
eg. I could see a ship on the horizon.
我在地平线上可以看到一艘船
② the limit of your ideas, knowledge, experience. 范围,眼界
eg. Extend the horizon of thinking 拓展思维
Explore vt.
① to travel into or through a place for the purpose of discovery 探险
eg. Many Europeans explored the continent of Africa in the 19th century.
② to investigate systematically, examine 系统地研究,调查
eg. We must explore our own ways of study.
n. exploration
adj. exploratory 勘探的
Take over
to take control of sth 接管,接任
eg. The young politician took over the leadership of the city.
Via: prep.
① traveling through a place on the way to another place 经过
eg. to travel from Beijing to Shanghai via Tianjin.
从北京出发经天津去上海
② using a particular person, machine etc. to send sth 通过
eg. I sent a message to Mary via her brother.
Conventional adj
traditional 习惯的,传统的
eg. John doesn’t believe in conventional medicine, he has