C．a guitar has been finished

　　D．a concert is about to begin

　　【答案与解析】　C　推断题。根据最后一句看，把吉他弦上好并绷紧后，一个吉他也就做完了。39．Which of the following is TRUE according to the passage?

　　A．The soundboard made of one piece of wood is better.

　　B．The shape of the soundboard is not very important.

　　C．The thickness of the soundboard affects the tone of the guitar.

　　D．The strings must be tied properly under the soundboard.

　　【答案与解析】　C　细节题。根据“make the soundboard just the right shape and thickness”判断，共鸣板的厚度影响吉他的音调，所以C项正确。

　　B

　　Becoming aware of the warning signs of learning disabilities and giving children the necessary help early can be key to a child's future.

　　Learning disabilities affect one in seven people according to the National Institutes of Health. Parents, therefore, need to be familiar with the early indicators of a learning disability in order to offer the right help as soon as possible.

　　The earlier a learning disability is detected, the better chance a child will have of succeeding in school and in life. Parents are encouraged to understand the warning signs of a learning disability from as early as pre－school. The first years in school are especially crucial for a young child.

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