A:eleven
B:twelve
C:thirteen
要使商的末尾有0, □ 里应填____。
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虽有嘉肴虽有佳肴,弗食,不知其旨也。虽有至道,弗学,不知其善也。是故学然后知不足,教然后知困。知不足, ;知困, 。故曰:教学相长也。
I still remember my happy childhood when my mother ____ me to Disneyland at weekends.
A _______ to a problem is a way of dealing with it so that the difficulty is solved.