10.case n. 情况，事实；病例，案例；箱子，盒子1）He thought the more time he spent on his lessons， the better performance he would make. But now he realizes it is not th...
Text A learned words and popular words本课主要单词1. learned adj. 有学问的，博学的；学术上的这个单词做形容词用时有两种读音，意思是有学问的，博学的；学术上的”；意思是经过训练学到的”。a learned man （学者）a...
7.The most common use of telecommunication satellites，however，has been for transmitting telephone calls.however在本句中做副词用，意思相当于but.但是however和but在用法上是有差异...
本课简介技术是否也是一把双刃剑，在给人们带来帮助的同时也带来了弊端？本课通过卫星通讯的利弊昭示人们明智”地运用技术才能使我们走向成功。卫星、计算机和电视的三结合改变了人们的生活。卫星被用来传送电视节目、电话和印刷材料；卫星被用于远程教育，使边远地区的人们通过空中教室”接受教育...
14.educational adj. 教育的education n. 教育educate v. 教育There are many educational programs on TV. （电视播放很多教育节目。）He received a good education when he was yo...
Text A Telecommunication via Satellite本课主要单词1. telecommunication n. 电信，远距离通信请注意这个词的构成，tele-是一个前缀，意思是远”，远距离”。用tele-为前缀构成的词很多，如：television（电...
9. Therefore we can say that the nuclear family becomes more important than the extended family as the society industrializes.句子中的therefore是一个副词，通常用来表...
2. all those people descended from a common ancestor， 所有来自同一祖先的人们。descended from a common ancestor”是一个省略了that的定语从句，修饰people.descended from的意思是传下...
10.nuclear adj. 核子的，核能的；中心的Mao Zetong used to say that under no circumstances would China be the first to use nuclear weapons.（毛泽东曾经说过在任何情况下，中国都不会第一个使...
Text A Families本课主要单词1. definition n. 定义，释义define v. 解释；给定义；明确表示He simply said it was very difficult for him to give a definition for that word.（他只是说要...