被认为是一种科学、有效的预测方法是（）
A、德尔菲预测法
B、定量预测法
C、定性预测法
D、综合预测法
参考答案：A
读一读，改一改。
( ) 1. Let me taking some photos.
A B C D
( ) 2. Why not playing football?
( ) 3. They go to see their grandparents in three weeks.
( ) 4. Everyone in our class like English very much.
( ) 5. I listening to music every day.
什么是电容的串联？
