New words
Illustrations [印刷] 插图；插画（illustration的复数）
Polio n. 小儿麻痹症（等于poliomyelitis）；脊髓灰质炎
Floppy adj. 松软的；叭嗒叭嗒响的；懒散的，邋遢的
Inauguration n. 就职典礼；开始，开创；开幕式
Algae . [植] 藻类；[植] 海藻
Epidemic adj. 流行的；传染性的 n. 传染病；流行病；风尚等的流行
Maze n. 迷宫；迷惑；糊涂 vt. 迷失；使混乱；使困惑
Ozone n. [化学] 臭氧；新鲜的空气
Beverage n. 饮料
tortillas n. 墨西哥玉米粉圆饼（tortilla的复数
Exercise 1
1、
Main Idea:E-mail (electronic mail) has several important advantages.
Signal Words Details
The main it take little time to send and receive message.
Another it is cheap to send a message by E-mail.
In addition you don’t have to worry about the time difference.
Last it allows you to send a single message to many people at the same time 2、
Main Idea:Communicating by e-mail becoming increasingly popular for many reasons.
Signal Words Details