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【单选题】
Zn2+ 与乙酰丙酮（L）形成络合物的 lgβ1 = 5.0，lgβ2 = 8.8，当溶液中络合物的浓度 [ZnL] = [ZnL2] 时，则 pL =A.
3.8
B.
5.0
C.
8.8
D.
13.8
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【单选题】Coins, unlike other ancient artifacts, are usually found by accident______ by design.
A.
not
B.
rather than
C.
still less
D.
far less
【简答题】Unlike oxygen, the element nitrogen is not active.
【单选题】Unlike commercial banks, other depository financial intermediaries do not have to be much concerned with excess withdrawals of their deposits since they do not have to pay on demand by a depositor.
A.
True
B.
False
【单选题】In the writer's opinion, unlike what other people thought, ______ is a way to avoid facing responsibilities.
A.
staying in his job
B.
being a 'career student'
C.
quitting jobs
D.
going back to college
【单选题】关于 do 循环体 while(条件表达式);以下叙述中正确的是:( )
A.
循环体的执行次数总是比条件表达式的执行次数多一次
B.
条件表达式的执行次数与循环体的执行次数一样
C.
条件表达式的执行次数总是比循环体的执行次数多一次
D.
条件表达式的执行次数与循环体的执行次数无关
【单选题】Unlike other girls in school, Jenny played football very well.
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】The constitution, unlike other forms of laws, is fundamental ______ our social system working properly. [ ]
A.
for keeping
B.
to keeping
C.
to keep
D.
with keeping
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