狗外出时走很远也不会忘记回家的路，这是由于它出去时走不远就要撒尿，这种行为属于[ ]
A．社群行为
B．攻击行为
C．防御行为
D．领域行为
答案：D
______ with severe drought in some areas, Chinese government is taking active measures to ensure people’s essential needs.
A．Facing
B．Faced
C．To face
D．Being faced
探测器用来观测由高能加速器或对撞机产生新粒子的能量、速度、动能等信息。 ( )
