哪些原因会影响平台活动的录取？（）
A.产品信息不完整
B.报名时间不对
C.报名产品和招商条件不符
D.价格优势不明显
参考答案：A, C, D
选词填空，补全对话。
A: May I ____________ (help, helping) you?
B: Yes! I want to buy a ____________ (dress, dresses). Where are the ____________ (dress, dresses)?
A: I'll ____________ (show, shows) you. This ____________ (way, dress), please.
Here they ____________ (is, are)!
B: Thanks!
单母线接线的主要优点是接线简单、设备少、操作方便、投资少，便于扩建。
