He stays up____ in the evenings to go online to get the____ information.

A．late, latest

B．lately, last

C．late, last

D．latest, latest

《联合国国际货物销售合同公约》规定，发盘生效于______

A．发盘方发出发盘时
B．发盘送达受盘人时
C．发盘送达受盘人后若干天
D．发盘方接到对方接受通知时