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【单选题】
下列关于羊乳说法中错误的是A.
羊乳的营养价值与牛乳大致相同
B.
羊乳蛋白质较牛乳细而软
C.
羊乳中含叶酸很少，长期羊乳哺乳容易导致巨幼红细胞性贫血
D.
羊乳中含维生素B12很少，长期羊乳哺乳容易导致巨幼红细胞性贫血
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皮皮学刷刷变学霸
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【简答题】比较下列离去基团离去能力的大小：( )＞( )＞( )＞( )。 (A)RO - (B)ROO - (C)Cl - (D)
【单选题】When the native guide said 'Kang-a-roo ', he really meant'______'
A.
Ah, it is a special kind of animal.
B.
I wonder what you have said.
C.
What do you mean by pointing at that animal?
D.
I have no idea of what you are referring to.
【简答题】deep-roo_ed
【单选题】The roo ________ is very clean.
A.
of upstairs
B.
upstairs
C.
in upstairs
D.
from upstairs
【单选题】The guests left, a lot of wastes in the room. .
A.
． left
B.
． to have left
C.
． to left
D.
． having left
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