为了除去萝卜、冬笋和山药等原料中( )、涩味和辛辣味，应用冷水锅焯水。
A．咸味
B．甜味
C．苦味
D．鲜味
参考答案：C
—What do you usually do _____ the evening?
—I watch the CCTV9 news, and do some revision work. [ ]
A. for
B. on
C. at
D. in
