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【单选题】
Negative externalities lead markets to produceA.
greater than efficient output levels and positive externalities lead markets to produce smaller than efficient output levels.
B.
smaller than efficient output levels and positive externalities lead markets to produce greater than efficient output levels.
C.
greater than efficient output levels and positive externalities lead markets to produce efficient output levels.
D.
efficient output levels and positive externalities lead markets to produce greater than efficient output levels.
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举一反三
【单选题】向下列配合物的水溶液中加入AgNO 3 溶液,不能生成白色沉淀的是
A.
[Co(NH 3 ) 4 Cl 2 ]Cl
B.
[Co(NH3)3Cl3]
C.
[Co(NH3)6]Cl3
D.
[Co(NH3)5Cl]Cl2
【单选题】The new student was very slow to __________ the unusual rules of the school.
A.
adapt for
B.
adapting for
C.
adapt to
D.
adapting to
【简答题】He first welcomed the new student and then explained college regulations. (go on)5．He first welcomed the new student and then explained college regulations. (go on)
【单选题】下列过程与配合物的形成无关的是 [ ]
A.
除去Fe粉中的SiO 2 可用强碱溶液
B.
向一定量的AgNO 3 溶液中加入氨水至沉淀消失
C.
向FeCl 3 溶液中加入KSCN溶液
D.
向一定量的CuSO 4 溶液中加入氨水至沉淀消失
【单选题】How old is the new student?
A.
Seventy.
B.
Seventy-eight.
C.
Eighty.
D.
Eighty-seven.
【单选题】The teacher didn't like ______composition written by the new student because it didn't make _______ sense.
A.
the;a
B.
the;/
C.
a; t he
D.
a;／
【单选题】下列过程与配合物的形成无关的是 [ ]
A.
使用强碱溶液除去铁粉中的SiO 2
B.
向一定量的AgNO 3 溶液中加入氨水至沉淀消失
C.
向Fe 3+ 溶液中加入KSCN溶液
D.
向一定量的CuSO 4 溶液中加入氨水至沉淀消失
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