视图中的一条线,可能就表示一条线,也可能表示具有积聚性的一个 的投影。
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视图中的一个封闭的线框,可能是表示一个 的投影,也可能是表示一个 的投影。
1) What was special about the teacher's voice?He spoke with a surprising tone of____________ for his students.2) What was the most valuable thing that a teacher could give his students according to the author?Awakening students' passion for ____________.3) What did Mr. Stone think of the importance of people’s interest in reading and writing?People with interest in reading and writing would ____________ far richer and fuller lives.4) What was Mr. Stone's response to the good-bye party given by the students?He was moved to ____________.