阅读短文，回答问题。
Tom is seven. He goes to school every day. The school is near his home. So he goes there on foot
and comes back home on time (准时). But today he is late. His mother asks him, "Why are you late
today?" "I was in the headmaster's office (校长办公室). " "Why did you go to the headmaster's
office?" "Because my teacher asked us a question in class, and nobody (没人) could answer it, but me."
"It's good to answer the question." "But the question was 'Who put ink on my chair? "'
1. How old is Tom?
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2. Does he go to school every day?
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3. How does he go to school?
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4. Can he answer the question?
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5. Do you like Tom? Why?
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列山脉既是我国地势第二级和第三级阶梯的界线，又是季风区和非季风区界线的是[ ]
山