题目内容

At the end of the adventure around the world:I refused to take a German traveler’s advice to ____________________ from my out-of-shape backpack.

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I found my alternative home — my backpack, which has the same function as home: carrying items ____________ and collecting ____________ on the road.

My conclusion (Para. 6): A home is like a backpack and I keep in my backpack _______________________.

The backpack serves as the source of _________________________, the witness of__________________________________________________, and the record of the steps I took.

土的抗剪强度由哪两部分组成?什么是土的抗剪强度指标?

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