商人“尽了最大的努力”的意思是：
A. 帮女孩出钱救妈妈。
B. 做生意如日中天。
C. 用10万美元投资。
D. 市场信息失而复得。
A．Because she does more housework while the parents are out.B．Because she purchases gr
A. Because she does more housework while the parents are out.
Because she purchases groceries for evening meals.
C. Because she provides special educational entertainment.
D. Because she always baby-sits the kids overtime.
Many plant foods provide both many vitamins and minerals of very few calories.
A. Y
B. N
C. NG
In one project of software engineering, the issue that adding more people will not lead to
A. the time that we wait during the process of working
B. complexity of constructing prototype model
C. the number of stations that we need
D. communication complexity among people
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