单词与词组：
dotted，点状的，dotted line为“虚线”
slogan，标语、口号、广告语
total，总计的；全部的，总数
net income，纯收益、净收入
net weight，净重
net loss，净损失、净亏损
net gain，净利润
net interest，纯利息］净利息
net price，净价、实价
accessories，附件
add-ons，附件、附加、附加软件
best seller，畅销书、金唱片、畅销书的作者
volume，卷、册、书卷；体积、容积、容量；音量、响度
specialise in，从事于……专职于……主攻……
deagram，图表

问题与例句：
this diagram represents …
the blue line represents … / the red line represents … / the dotted line represents …
total net income

The book surprised us by being such a seller.
low volume product
niche market product
low margin product
high volume product

How many slogans do we hear?
What does the dotted line represent?
What slogan do they choose at the advertising company?
What question does Mr.Sakai ask?

the one boss your office needs
tomorrow or the day after
hi-tech executive toy
computerised game
the market responds well to

Our company …
We specialise in …
Most of our products
We have a large market share in …
This diagram shows …