Constant worry and tension can have many harmful effects on the human body.It is a known fact that stressful times can cause one to suffer hair loss.It would make sense that if it can cause these problems，perhaps it also may contribute to graying.However，there is no sound evidence to support this.

　　On the other hand，many medical professionals believe that there may be a link between graying and a constant state of anxiety or tension.Does stress cause gray hair？There is no scientific evidence to support the theory，but it is best to avoid stressful situations.

　　【语篇解读】　压力会导致头发变白吗？许多人相信情况是这样的。本文从年龄和基因两方面谈了头发变白的原因，持续的压力和忧虑对于身体是有害的，可导致脱发。但是，究竟压力和头发变白之间是否有联系，目前尚无定论。

　　1．The underlined phrase in the first paragraph most probably means________.

　　A．clever remarksB．silly remarks

　　C．exciting remarks D．disappointed remarks

　　解析　词义猜测题。画线短语前面提到“Many people believe that tension and stress can cause your hair to lose its color”，即许多人相信紧张和压力导致头发褪色变白。短文接着谈到“In fact，it is...”，这是推测画线词意思的关键。因此an old wives’ tale意为“无稽之谈”。

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