— Excuse me, which is the way to the Science Museum?

— Walk along Dongshan Road, it's next to a hospital. _____. [ ]

A. You won't pass it

B. You can't miss it

C. You don't lose it

D. You mustn't see it

下列物质可以作为基准物质使用的是( )。

A．重铬酸钾

B．高锰酸钾

C．氢氧化钠

D．盐酸