Theauthorusespowerwalkingasanexamplemainlybecause_________.
A.itisanoutd oorsport
B.itimprovesourhealth
C.itusesfewerresources
D.itisrecommendedbyexperts
正确答案:C
Theauthorusespowerwalkingasanexamplemainlybecause_________.
A.itisanoutd oorsport
B.itimprovesourhealth
C.itusesfewerresources
D.itisrecommendedbyexperts
正确答案:C