—Could you tell me ____?

—It’s twenty minutes by underground.

A．how can I get to your school

B．how much it costs to get to your school

C．how far it is from your home to your school

D．how long does it take me to get to your school

根据你的生活经验和所学的化学知识，判断下列做法（或说法）不正确的是

A．油锅着火时，迅速盖上锅盖

B．用洗洁精洗去餐具上的油污，是因为它具有乳化作用

C．厨房中煤气泄漏，应立即打开排油烟机

D．使用可降解塑料，可减少“白色污染”