29.Don’t waste your time or energy on such a subject.Try to find something ______ researching into.
问题描述：
29.Don’t waste your time or energy on such a subject.Try to find something ______ researching into.
B.worth
C.worthy
D.valuable
乱撞的就算了,最好有解释,
答
valuable多指金钱,物质上
worthy 的词组是worthy of ...
worth是值得有价值（可指精神上）,worth doing...
故选b
句意：不要再这种学科上浪费你的时间和精力,去找一些有价值的事去做.