题目内容：
Whichofthefollowingstatementsissupportedbythepassage?
A．Thecollegestudentshavetroubleseparatinggoodplantsfromwildgrass． B．Craftsman'sexperienceisusuallyunscientific．
C．Thecontemptuous(傲慢的)collegestudentswillreceivenothingfromcraftsmen．
D．Traditionalpracticesareasimportantasexperienceforthecollegestudent．
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答案解析：