题目内容
The needle treatment ________ back to the ancient times has cured many diseases.
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Snow was falling when they went along a mountain path __________ to the front.
___________ its size with that of the whole earth, we find the highest mountain does not seem high at all.
At present, two mobile cabin hospitals have been built in the region, ______ more patients to be treated.
In classes, you'd better understand as much as possible while _______notes.
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