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【单选题】
维生素D3的活性代谢物为( )
A.
维生素D
B.
1,25-二羟基D 2
C.
25-(OH)D 3
D.
1A,25-(OH) 2 D 3
E.
24,25-(OH) 2 D 3
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【简答题】5h.mp3: Many liberal Democratic voters have become________(4wds) made in Congress, and they will be sorely disappointed if the health care effort fails.
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A.
原生矿物
B.
他生矿物
C.
自生矿物
D.
次生矿物
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【单选题】— Have all the students know that our class will visit the factory this afternoon. — Yes, Every student _____ about it. [     ]
A.
have told
B.
have been told
C.
has told
D.
has been told
【单选题】我国土地资源的基本特点不包括()。
A.
绝对数量小,人均占有少
B.
类型复杂多样,耕地比重小
C.
利用情况复杂,生产力地区差异明显
D.
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【多选题】根据目的和手段是否明确,可以把创业机会分为那三类?
A.
识别型机会、
B.
发现型机会、
C.
创造型机会、
D.
生存型机会
【单选题】— _____ all the students known that our class will visit the museum this weekend? —Yes, every student _____ about it. [     ]
A.
Has; tells
B.
Has; told
C.
Have; was told
D.
Have; were told
【单选题】我国土地资源的基本特点不包括( )。
A.
绝对数量少,人均占有少
B.
类型复杂多样,耕地比重小
C.
利用情况复杂,生产力地区差异明显
D.
地区分布不均,保护和开发问题突出
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