题目内容:
If ateacher wants to design the Lead-in stage of a lesson plan, which of thefollowing might be of his/her least concern?
A. Thetime of Lead-in. A.The time of Lead-in.
B. Thecontent of teaching and students' age.
B. The content of teaching and students' age.
C. Toconcentrate students' attention.
C. To concentrate students' attention.
D. Thenumber of students.
D. The number of students.
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答案解析: