-- In the countryside you can enjoy fresh air, blue sky and quiet surroundings.

--- _______ more and more retired people are escaping from the crowded city.

A．It is no wonder

B．It is no doubt

C．There is no need

D．There is no possibility

吉士粉色泽微黄，在烹饪中的主要作用是（）。

A．致嫩、增色

B．提味、致嫩

C．添香、增色

D．增色、减味