One really tough teacher can ruin your semester. 2. Don’t buy your textbooks until you know for sure the teacher is actually going to use them.

不要买教科书，除非你确信你的导师会用到它们。

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“You may have simply thought, ‘I feel sorry for them, ’ or ‘that sounds really tough, ’ but that is better than not thinking at all, ” the teacher said.

“也许你们只能在心里想我为他们感到难过或者他们的处境真艰难，但那总比什么都不想要好，”该老师说，你们应该在这次灾难中学会同情他人。

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