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[单选题]
2.5 What is the advantage of online classes?(1分)
A
The students must spend several hours online every day.
B
The students needn’t take tests.
C
The students can have online classes even on a trip.
D
The students needn’t do homework.
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试题答案：
C
答案解释：
相关题目
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写作题
4.2 Which of the following is NOT mentioned as trouble in traveling to foreign countries?(1分)
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