右季肋区肿块可能是（）。①扩张的胆囊②肿大的肝脏③右肾上极
A.①②③
B.①②
C.①
D.②③
参考答案：A
How many months are there in a year? [ ]
A. Six
B. Twelve
C. Ten
试述中国居民膳食平衡宝塔
