B．skilled

　　C．curious

　　D．passionate

　　答案　D

　　解析　certain确信；skilled熟练的；curious好奇的；passionate热情的。句意为：为什么不花时间做一些你真正感兴趣的事情呢？故D项正确。

　　8． A.enthusiasm

　　B．truth

　　C．meaning

　　D．use

　　答案　C

　　解析　enthusiasm热心；truth事实，真理；meaning意义；use使用。根据语境可知，此处指没有意义的事情。故C项正确。

　　.阅读理解

　　Gestures are the “silent language” of every culture.We point fingers or move another part of the body to show what we want to say.It is important to know the body language of every country，or we may be misunderstood.

　　In the United States，people greet each other with a handshake in formal introduction.The handshake must be firm.If the handshake is weak，it is a sign of weakness or unfriendliness.Friends may place a hand on the other’s arm or shoulder.Some people，usually women，greet with a hug.

　　Space is important to Americans.When two people talk to each other，they usually stand two and half feet(69 centimeters)away and at an angle(角度)，so they are not facing each other directly.Americans get uncomfortable when a person stands too close.They will move back to have their space.If Americans touch another person by accident，they say，“Pardon me” or “Excuse me”．

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