单选题
A preschool teacher teaches the children ______.
A、
who are already in the first grade
B、
who have not yet begun school
C、
who have finished elementary school
D、
who are going to finish elementary school
【正确答案】
B
【答案解析】
[解析] 推理题。根据文中第二段得知：这些老师教的是三到五岁的孩子，为他们正式上学做准备．故本题答案为[B]。
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