Question

-- How many students are there in each group?

--- Usually each group _______ six students in our class.

A. is made from   B. is made up of

C. is made in     D. is made of

Answer

B

【解析】

试题分析：句意：-每个小组里有多少学生？ -通常在我们班六个学生组成一组。be made of表示“某物由……制造而成”（从制成品中可以看出原材料）。be made from也表示“某物由……制造而成”（从制成品中一般看不出或难以分辨出原材料）。be made in表示“某物由某地制造”。be made by表示“某物由某个人或集体制造而成”，其中介词by用来强调动作的执行者。be made into表示“某种原料制成某物”，与be made of...和be made from...的意思正好相反。be made up of表示“某物由……组成或构成”。所以选B。

考点：考查固定短语。