( ),the new medicine is now in mass production.

问题描述:

( ),the new medicine is now in mass production.
B.With this problem being solved
C.With the problem solved
为什么不能选B?

C With the problem solved 问题已解决了,the new medicine is now in mass production.现在这新药正在大量生产中.B.With this problem being solved 问题仍在解决中,所以新药还未见效,当然还未能大量生产了.所以答...