They are _______ little sheep that we can't make much money by selling _______.
A:so, it
B:such, it
C:so, them
D:such; them
①想问题做事情要坚持两点论,防止片面性
②解决主要矛盾是解决一切矛盾的前提
③必须重视主次矛盾相互转化的条件和可能
④着重把握矛盾主要方面的同时不能忽视矛盾的次要方面