— What are you going?

— I am going to the cinema with some friends. The film ____ quite early, so we ____ to the

     bookstore after that. [ ]

A. finished; are going

B. finished; go

C. finished; are going

D. finishes; go

下列四个图象能正确反映其对应实验操作的是（　　）

A．

是向一定质量的稀盐酸中加入过量铁粉

B．

用等质量、等溶质质量分数的双氧水分别制取氧气

C．

高温煅烧一定质量的石灰石

D．

是通过实验绘制得到的硝酸钾溶解度曲线