植物的光合作用除了制造淀粉等糖类外，还制造出蛋白质、酯类等其他有机物。 [ ]

You are taking over a project and determine the following：Activity B has an early finish(EF)of day 3，a late finish(LF)of day 6，and an early start(ES)of day 2．Activity L is being done by a hard-to-get resource．The cost performance index(CPI) is 1.1 and the schedule performance index(SPI)is 0.8．Based on this information，what would you be more concerned about ？（）

A．Float

B．Resources

C．Cost

D．Schedule