题目

_____ we were worried about was _______ they could manage to control the pollution. A. That; how   B. That; whether    C. What; that   D. What; whether   答案：D对下列四幅图，描述正确的是A. 甲图是西半球，图中南北美洲的分界线是苏伊士运河B. 乙图是东半球图，图中陆地面积大于海洋面积C. 丙图是北半球，图中被亚洲、欧洲、北美洲环绕的是印度洋D. 丁图是南半球图，图中南极洲周围环绕的大洋是太平洋、大西洋、印度洋