If you ___ weighting the pros and cons and calculating gains and loses.
问题描述：
If you ___ weighting the pros and cons and calculating gains and loses.
What's the meaning of "pros and cons"
A.spend time
B.kill time
C.have a hard time
D.hope for
答
A spend time (in)doing sth.weighting和calculation的ing形式就说明要选择这个答案.另外,这句话的意思是,如果你花一些时间在权衡利弊,计算得失.