下列语句中,描写西北地区景观的是( )
A:早穿皮袄午穿纱,围着火炉吃西瓜
B:枯藤老树昏鸦,小桥流水人家
C:千里冰封,万里雪飘
D:远看是山,近看成川
Because of G20 Summit, Hangzhou is becoming an i____ city.