-3-6+9-11+2．
-3-6+9-11+2=0-11+2=-9．
两个所受重力大小分别为GA和GB的小球A和B，用轻杆连接，放置在光滑的半球形碗内．小球A、B与碗的球心O在同一竖直平面内，如图所示，若碗的半径为R，细杆的长度为2R，GA＞GB，由关于连接两小球的细杆AB静止时与竖直方向的夹角为θ，以下说法正确的是（ ）
A．arctanGBGA+π4
B．arctanGAGB+π4
C．π2-arctanGAGB
D．π4-arctanGBGA
It is like him to say what he thinks, ________ other people’s feelings.
A．contrary to
B．regardless of
C．in response to
D．in terms of
