根据人们对产品的了解、态度、使用状况或反映，将购买者划分为（）
A.相同群
B.不同群
C.同质群
D.相似群
参考答案：C
冻液可分为酒精－水型、甘油－冰型和乙二醇－水型三类。（）
Directions: Write an essay of 160-200 words based on the following drawing. In your essay, you should
1) describe the drawing,
2) interpret its meaning, and
3) give your comment on it.
You should write neatly on ANSWER SHEET 2.
