( )she is very old,( )she can still work eight hours a day

题目

( )she is very old,( )she can still work eight hours a day
A.because ,so B.though,but C.as,yet D.though ,yet

答案

应该选 D
because 和so 不能同时使用
though 和but 也不能同时使用
没有 as yet 的搭配