在同一个平面内,两条直线只有两种位置关系,即平行或相交;
故选:A.
Turning cultivated land back into forests or pasture is a fundamental way to stem soil ______ and desertification in the long run.
A.erosion
B.depletion
C.violation
D.delusion
小儿肌性斜颈的治则为:()
A.健脾和胃,强筋散结,局部为主
B.补肾益气,强筋壮骨,局部与整体统一治疗
C.舒筋活血,软坚消肿,局部为主
D.温中和胃,运化水谷,局部与整体统一治疗
E.健脾益肾,实筋骨,充肌肉,局部与整体统一治疗