题目

在白蚁群体内部不同成员之间分工合作，共同维持群体生活。这种行为属于 A .社会行为       B.取食行为           C.生殖行为           D.防御行为  答案：A解析:略 ______we were worried about was ________they could manage to control the pollution.A．That howB．That whetherC．What thatD．What whether