姿态言语指通过躯干和（）的动作变化来传递信息。
A、眼神
B、四肢
参考答案：B
计算﹣a2+3a2的结果为（ ）
A．2a2
B．﹣2a2
C．4a2
D．﹣4a2
We want the case to be reopened even if there is the risk ______ it would concern football players.
A． which
B． what
C． when
D． that
