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通过结晶，溶液中大部分的杂质会留在母液中，再通过 ，可以得到纯度较高的晶体
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【单选题】Exceptional children are different in some significant way from others of the same age. For these children to develop to their full adult potential, their education must be adapted to those difference...
A.
the needs of exceptional children are more important than their environment
B.
the growth of exceptional children has much to do with their family and die society
C.
the education of exceptional children mainly depends on the public schools
D.
the society produces more influence on exceptional children than on normal children
【简答题】英译中 Exceptional children are different in some significant way from others of the same age. For these children to develop to their full potential, their education must be adapted to those differ...
【单选题】The comparison of a body and a car means .
A.
the human body can't be compared to a car
B.
the older a person is the more care he needs
C.
too much emphasis has been put on the old people's values
D.
it is easy to provide spare parts for the old people
【单选题】T he human body is made up of ________.
A.
different kinds of arteries
B.
different kinds of cells
C.
different kinds of vessels
【单选题】We have _____ each other. [ ]
A.
some different
B.
any difference from
C.
some different about
D.
some differences from
【简答题】在卖出合约后，如果价格上升则进一步卖出合约，以提高平均卖出价格，一旦价格回落，可以在较高价格上买入止亏盈利，这称为平均买低。（ ）
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