题干
—Is the tall man over there our head teacher?
—No, it be him. He has gone to Shanghai for a meeting.
—No, it be him. He has gone to Shanghai for a meeting.
A：must
B：can't
C：can
D：mustn't
答案(点此获取答案解析）
B
环节少、成本低、效率高成为颇受欢迎的消费模式。但网购商品仅占社会消费品零售总额的1%～2%，而韩国这一比例高达10%。为促进网购健康发展，从网购经销商角度看应 （ ）