合上答案纸和试卷。

Close you answer sheet and test paper.

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然后以一条单一线把对应的信做记号于答案纸经过中心。

Then mark the corresponding letter on the Answer Sheet with a single line through the centre.

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PROFESSOR: -- that this is not a quick clicker question, so you actually need to maybe write something down to figure out the answer.

教授：这个问题不是一眼就能看出来的，你们需要在纸上写一写,才能得到答案。

麻省理工公开课 - 化学原理课程节选

That's not hard; you have it right in front of you.

并不难回答的问题，可以从你面前的那张纸上找到答案。

耶鲁公开课 - 旧约导论课程节选

Well, the straightforward answer is a piece of paper had parts, and in breaking it, in ripping it, what I literally did was I ripped one part from another.

直截了当的答案是,一张纸是有部分的，破坏它，撕裂它，我做的就是把它撕成了,一个个部分。

耶鲁公开课 - 死亡课程节选