题目

Their balanced diets became such a success    before long Wang Peng became slimmer and Yong Hui put    more weight. 答案：【答案】that；o【解析】句意：平衡饮食如此的成功以至于不久后王鹏变得越来越苗条，永辉更胖了。第一空考查句式such...that...；第二空考查固定短语put on weight，意为增加体重。因此答案为that，on. 用飞机反复大面积地喷洒DDT，不可能的结果是 [　　] A．减少了该地区的害虫 B．抗DDT的变异型的害虫比例增大 C．消灭了这个地区的害虫 D．这个地区的某些鸟类剧减