怎么看u盘真假:over across through的区别
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求事例.
还有如果是这道题应该怎么填.
The Great Wall travels_____deep valleys,_____deserts and _____mountains.
还有如果是这道题应该怎么填.
The Great Wall travels_____deep valleys,_____deserts and _____mountains.
through
across
over
over
through
across