单选题 What the author mainly intends to tell us is that ______.

A、 one's sleeping position has something to de with one's character
B、 everyone has got both real and secret personalities
C、 the position in which one goes to sleep is the most important one
D、 when awake, one does not show one's secret personality

【正确答案】 A

【答案解析】主旨题。通观全文，文章主要讲述的是睡觉姿势和人的性格之间的联系，所以，[A]正确。