— Mike _____ a job in a bank, but to our surprise, he didn't take it.

— Maybe he got another job.[ ]

A. is offered

B. offered

C. was offered

D. has offered

只用一种试剂就能鉴别Na₂SO₃、Na₂CO₃、Na₂SO₄的是（　　）

A．品红溶液

B．BaCl₂溶液

C．盐酸

D．NaOH溶液