主营业务利润率是主营业务利润与主营业务收入的百分此。( )
参考答案:对
深反射见于()。
A.掌劾反射
B.下颌反射
C.腹壁反射
D.角膜反射
E.足趾反射
With the old man ______ the way, we had no trouble in finding the village.
A.show
B.to show
C.showing
D.shown