协同凝集试验所用的载体是

A．新鲜红细胞

B．洗涤红细胞

C．醛化红细胞

D．聚苯乙烯颗粒

E．金黄葡萄球菌

My mother says a teaching machine has to be ______ to fit the mind of each boy and girl it teaches and that each kid has to be taught differently.

A．modified

B．considered

C．adjusted

D．remanufactured