It is an abundance of cheap goods and quick delivery service ______ account for the fact that the number of Internet shopping on this website is four times ______ it was last year.

A．that; that

B．which; what

C．what; that

D．that; what

下列有关油漆间的保护叙述正确的是（）.Ⅰ．如是二氧化碳系统，设计成能至少放出相当于所保护总容积40%的自由气体；Ⅱ．如是干粉系统，设计能力至少为0.5kg干粉/M³；Ⅲ．如是水雾或喷水器系统，设计供水能力为5L/M²Min，水雾系统可连接在船舶消防总管上；Ⅳ．在任何情况下，该系统均应能从所保护处所的外部进行操作。

A.Ⅰ～Ⅳ

B.Ⅰ～Ⅲ

C.Ⅱ、Ⅲ、Ⅳ

D.Ⅰ～Ⅲ