安共____画，升共____画。
c____l____
--I think it's really necessary. It is reported that the food that Chinese people
every year is enough to feed 200 million people for a year.
我国对资本主义国工商业进行社会主义改造采取的形式是（ ）
如图所示的是初中化学中的一些重要实验．下列说法错误的是（ ）
c