The schools themselves admit that not all children will   be successful in the jobs ____they are being

trained.   [ ]

A. in that                        

B. for that    

C. in which                            

D. for which

受膳食因素影响必须与结合的有机物分离才能被吸收的有( )。

A．血红蛋白铁
B．铁蛋白
C．非血红素铁
D．血红素铁