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【单选题】
在严寒地区,土的冻结深度可达( )。A.
1～2m
B.
2～3m
C.
3～4m
D.
4～5m
拍照语音搜题，微信中搜索"皮皮学"使用
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A.
the college and university, can be described as a variety of institutions
B.
a college may form. one major division of a university
C.
colleges may also be independent of a university
D.
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A.
正确
B.
错误
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