在“自上而下”的母线负荷预测阶段，一般使用基于系统负荷（）的方法，进行母线负荷预测。
A、分配
B、分布
C、分散
D、分离
参考答案：A
按要求完成句子，每空一词。（每题2分，共10分）
小题1:Our teacher often goes to the cinema.(改为否定句)
Our teacher ______ often ______ to the cinema.
小题2:English isn’t as interesting as math.（改为同意句）
English is _______ ________ than math.
小题3:Kate took good care of the baby yesterday evening.(变为被动语态)
The baby________ _______ _______ well by Kate yesterday.
小题4:She didn't go shopping that afternoon because she was ill.(由主从复合句改写成简单句)
She didn't go shopping ______ _____her illness.
小题5:We could hardly hear what she said, ______ ______? (完成反意疑问)
控股公司的职能主要是：（）
A.资本运营
B.产品的生产经营
C.国际贸易
D.市场开发
