某无土栽培用的营养液，要求KCl、K₂SO₄和NH₄Cl三种固体原料的物质的量之比为1：4：8．若配置该营养液，取214g NH₄Cl，则需KCl和K₂SO₄的质量分别为（　　）

A．53.5g和214g

B．37.25g和348g

C．74.5g和696g

D．149g和696g

—How do you feel about our manager—Mr. Yang?

—He is very easy­going. I feel ____ when I stay with him.

A．at a distance

B．at ease

C．at a loss

D．at heart