凡是桂O牌的中巴车，一律按（）型车操作。
A、1
B、2
C、3
D、4.2
参考答案：B
When we arrived in ________ used to be called the foggy capital，we found London completely changed.London is now one of the capital cities in the world with the finest air quality.
A．which
B．what
C．that
D．where
膳食结构评价的依据是______。
A．中国居民膳食营养素参考摄入量 B．健康人群的膳食模式C．地中海膳食模式 D．中国居民平衡膳食宝塔
