脊髓灰质炎后综合征的练习方案不包括()
A．柔软度练习
B．无疲劳的肌力练习
C．调节
D．交叉训练
E．放松练习
参考答案：E
把一重为为5N的实心金属球放入如图所示的液体中时，金属球漂浮在液面上，容器横截面积为100cm2，则小球所受的浮力为 N，小球放入后，容器底部所受到的压强增大了 Pa（假设小球放入容器后水不溢出）．
. However hard I tried to explain it to her, she just couldn’t understand. I found her impossible to .
A．get over
B．get along with
C．get through
D．get to
