题目

 (07·江西E篇) The literal meaning of philosophy is “love of wisdom”. But this meaning does not tell us very much . Unlike the other discilines（学科）,philosopjy cannot e defined by what you study ,because it si actually unlimited. Anything can be the subject matter of philosophy:are, history, law, language, literature, mathematics, and in fact, the other academic disciplines are directly related to philosopkhy. For this reason you get a Doctorate（博士学位）of Philosoophy (Ph. D.) in biochemisty, or computer science, or psychology.   Two broad sub-fields of philoso若等腰三角形两边长分别是2和7，则它的三条中位线所围成三角形的周长是88．