猪苓增强免疫功能的主要成分是（）
A.猪苓酸A
B.猪苓多糖
C.猪苓酸C
D.角甾醇
E.猪苓醇
参考答案：B
Not far from the school there was a garden, ________ owner seated in it playing chess with his little
grandson every afternoon. [ ]
A．its
B．whose
C．which
D．that
计算并填写表1。
表1
