（）指标是企业电子商务系统的评价指标中最重要的一部分，它最直接体现企业电子商务系统给企业带来的经济收益。
参考答案：经济评价指标
从括号中画出合适的词完成句子。
1. _____(Can, Are, Do) you like bananas?
2. _____(Do, Does, Are) your brothers like sports?
3. _____(Do, Does, Is) your mother have a sister?
4. My best friend, Jim, _____(don't, isn't, doesn't) like ice cream.
5. My mother and I _____(likes, like, want) eating oranges.
6. My parents _____(doesn't, don't, aren't) like hamburgers.
外科急性感染是指（）。
A.病程在1周以内
B.病程在2周以内
C.病程在3周以内
D.病程在4周以内
E.病程在5周以内
