已知二次函数f（x）=x²-2x-3在区间[0，m]上的值域为[-4，-3]，则实数m的取值范围是______．

10 members were assigned in advance to your project team. This pre-assignment could because of all the following reasons EXCEPT:

A．People were promised as part of a competitive proposa

B．Suitable people came forward and mentioned that they wanted to work on the projec

C．Staff assignments were defined in the project charte

D．Project is dependent on the expertise of some of the pre-assigned person