It _____ have been Tom that parked the car here, as he is the only one with a car. [ ]

A. may

B. can

C. must

D. should

蒙台梭利感觉训练要通过具体步骤程序，要按照“三段式”练习进行，它们是（）

A.命名—确认—记忆

B.听说—读写—练习

C.计划—操作—回忆

D.计划—绘画—评价