Everyone has two personalities（性格）﹣the one that is shown to the world and the other that is secret and real．You don't show your secret personality when you are awake because you can control yourself，but when you are asleep，your sleeping position shows the real you．In a normal night，of course，you often change your sleeping positions．The important position that best shows your secret personality is the one that you go to sleep．

If you go to sleep on your back，you are a very open person．You normally trust people and you are easily influenced by new ideas．You don't like to make people unhappy，so you never express your real feelings．You are quite shy and you aren't very confident．

If you sleep on your stomach，you are a person who likes to keep secrets．You worry a lot and you are always easily becoming sad．You never want to change your ideas，but you are satisfied with your life the way it is．You usually live for today not for tomorrow．

If you sleep on curled up，you are probably a very nervous person．You have a low opinion of yourself and often protect yourself from being hurt，so you are very defensive（防御性的）．You are shy and you don't usually like meeting people．You like to be on your own．

If you sleep on your side，you have usually got a well﹣balanced personality．You know your strengths and weaknesses．You're usually careful．You have a confident personality．You sometimes feel worried，but you don't often get unhappy．You always say what you think，even if it makes people angry．

67．When can we know a person's personality through the sleeping position？　　

A．At night

B．During the daytime

C．During the deep sleep

D．At the beginning of sleep

68．If Tom is shy and likes to stay alone，he probably goes to sleep　　．

A．on curled up

B．on his stomach

C．on his side

D．on his back

69．Which statement is right according to the passage？　　

A．In a normal night，people often sleep in one position．

B．If you don't have confidence in yourself，you may sleep on your side．

C．Changing positons can cause sleeping problems．

D．Sleeping positons can show people's secret personalities．

70．Where do you think the passage is from？　　

A．A story book．

B．A science magazine．

C．An amusement magazine

D．A guide book．