合同根据其成立是否需要实际交付方能成立分为()合同与()合同。
参考答案:诺成,实践
During the war there was a serious lack of food. It was not unusual that even the wealthy families had to ______ bread for days.
A. eat up B. give awayC. do without D. deal with
互联网的特点()
A、开放
B、互动
C、创新
D、多元