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【单选题】
已知NH3的Kb=1.8×10-5，则NH4+的Ka是（）A.
B、5.6×10-10
B.
C、1.00×10-14
C.
D、4.24×10-3
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举一反三
【简答题】看万山红遍, ( ); ( ), ( )。
【简答题】看万山红遍, 。《沁园春·长沙》
【单选题】According to Paragraph 7, what is the contribution of Carter and his party?
A.
They brought into light valuable treasures for ordinary people to enjoy.
B.
They stored the valuable treasures in the Cairo Museum.
C.
They sold the valuable treasures to art lovers.
D.
They put back the valuable treasures in the tomb.
【简答题】看万山红遍,层林尽染, , 。