[學 以 致 用]

　　A manufacturing default means the hair produced is so small that it appears invisible to the naked eye，giving the classic bald spot or receding hairline(發際線)．The US team told the Journal of Clinical Investigation the fault lies with the stem cells that make new hair.It may be possible to“cure”male baldness by restoring the normal function of these cells，the experts hope.Ultimately，they hope to be able to develop a cream that could be applied to the scalp(頭皮)to help the stem cells grow normal hair.

　　The underlined word“receding”in the paragraph most probably means________.

　　A．gradually moving backwards

　　B．getting thicker and thicker

　　C．becoming difficult to see

　　D．gradually disappearing

　　答案　A　[詞義猜測題。畫線詞前的單詞or前后的bald spot和receding hairline意義相近，可見此處指發際線逐漸后移，也就是禿頂。A項與此意義最為相近。]