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【单选题】
甲醛吸收副玫瑰苯胺分光光度法测定二氧化硫时选择的测定波长为（ ）nm。A.
420
B.
577
C.
560
D.
545
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举一反三
【单选题】Jack sat down in front of the visitor because he wanted ______.
A.
to see the visitor
B.
to show the visitor how clever he is
C.
the visitor to leave
【单选题】Jack wanted to read more, so he asked his friend if there was ________ to read.
A.
something easy enough
B.
something enough easy
C.
enough easy something
D.
easy enough something
【单选题】Jack wanted to get a ticket to Titanic, but there was ____ left. [ ]
A.
no
B.
not
C.
none
D.
one
【单选题】Jack wanted to read more, so he asked his friends if there was ________ to read. [ ]
A.
something easy enough
B.
something enough easy
C.
enough easy something
D.
easy enough something
【单选题】Jack only wanted to ______.
A.
make something move
B.
lift something
C.
put something in place
D.
keep something in place
【单选题】Jack told his daughter that she could have she wanted for Christmas.
A.
which
B.
whatever
C.
that
D.
whenever
【简答题】使用SQL语句查找“成绩”表中有“分数”的记录：SELECT﹡FROM成绩WHERE分数__________
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