物体在两个相互垂直的力作用下运动,力F1对物体做功6J,物体克服力F2做功8J,则F1、F2的合力对物体做功为[ ]
A.14J
B.10J
C.2J
D.-2J
D
With the good care taken by doctors and nurses, many patients are beginning to _________.
A.pick out
B.turn up
C.turn out
D.pick up
简述世界观在个性中的地位。