功率因数调整电费计算包含（）。
A.电度电费
B.增减率
C.代征基金附加
D.基本电费
参考答案：A, B, C, D
He had no choice but to go on because it is their agreement that no one ______ quit the plan half way.
A．need
B．will
C．shall
D．can
小儿出齐20颗乳牙的时间是（）
A.8～10个月
B.11～12个月
C.13～15个月
D.16～19个月
E.20～30个月
