在您开始这个调查问卷之前，请您先用一分钟的时间来思考以下陈述。

Before you start the questionnaire, please spend one minute to think about the following statement.

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若使用投影片，切记，一般规则如下：一张投影片不超过一分钟。每张投影片只陈述一个概念。投影片上的字能少就少。

If you show PowerPoint slides, remember that the general rule of thumb is no more than one slide a minute, one idea per slide and as few words as possible.

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