题目内容：

    Students usually do lots of homework and have some exams. What color do your teachers grade your homework and exam papers? 1. Yeah. Teachers always use red pens to check students papers and homework, 2. The headmaster asks all teachers to use green pens to check students' papers and homework, and the students there need to use purple pens to comment(评论) on teachers' grades.

 3. A study shows that color is negative(消 极的) color. Red pens can make students worried and unhappy. One of the headmasters Jennie Hick says, "Students can do better if  teachers use green pens." 4. He says. "I always use red pens to work. I think children like red better because they can read red comments more easily:"

5. The important thing is how the students think of their comments.

A.It's red, isn't it?

B.But Chris McGovern, a teacher, doesn't agree.

C.Why are the teachers no longer (不再) using red pens?

D.A study shows that green is good for students.

E.In fact, using a color like green or red is not important.

F.But in England, the teachers at Mount School need to put away their red pens