下列哪些情况不提示有氧训练的运动强度过大()。
A.持续性疲劳
B.不能完成运动
C.运动后无力
D.运动后恶心
E.活动时因气喘而不能自由交谈
参考答案:A
_______, there would be no air around the earth.
A.There were no gravity
B.There was not any gravity
C.Were there no gravity
D.was there no gravity
为什么需要对包装进行分类?