求翻译：这个时候，问答题的作用就显示出来了。问答题没有标准答案，可以让学生自由发挥，充分表达他们的想法。所以，通过选择题和问答题的结合，让这份调查报告具有了一定的广泛性，也具有了一定的专注性。是什么意思？

This time, the question of the role is displayed. Questions and Answers is no standard answer, you can let the students free rein to fully express their ideas. So, through a combination of multiple choice and essay questions, the survey has a certain breadth, and also has a certain focus.

This time, the CD is displayed. There is no standard answer, and rewording to allow students to freely play, fully express their ideas. Therefore, through multiple-choice and free response, with the copies of the full report of the survey for this with a wide range of sexual, but also has a certain

This time, the essay question function demonstrated.The essay question does not have the standard answer, may let the student display freely, expresses their idea fully.Therefore, through the choice question and the essay question union, let this report of investigation have certain universality, al

This time, the question's role is displayed. Ask answer does not answer, you can allow students to freely play, full expression of their ideas. Therefore, through a combination of multiple-choice and essay questions, let the breadth of this report has some, but also has a certain focus.

正在翻译，请等待...