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【单选题】
有关影响沉淀完全的因素叙述错误的是 ( )A.
利用同离子效应，可使被测组分沉淀更完全
B.
利用盐效应，可使被测组分沉淀完全
C.
配位效应的存在，将使被测离子沉淀不完全
D.
温度升高，会增加沉淀的溶解度
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举一反三
【单选题】It can be inferred from the passage that ______.
A.
the 1992 Los Angeles riots lasted a whole week
B.
Rodney King seemed very angry when he appeared on television on Friday
C.
media coverage of s as they occur can have either good or bad results
D.
most people who had seen the video of Rodney King beating agree with the verdict
【单选题】In every cultivated language there are two great classes of words, which makes up the whole vocabulary. First, there are those words 【B1】 which we become familiar in daily conversation, which we 【B2】,...
A.
at
B.
with
C.
by
D.
through
【单选题】The boys ______ their father because, although he was stern, he was fair.
A.
looked down upon
B.
looked up to
C.
looked up at
D.
looked up for
【单选题】__________that no one enjoys__________________.
A.
He seems; to be looked down on
B.
He is seemed; being looked down upon
C.
It seems; to be looked down upon
D.
It seems; being looked down upon
【简答题】He looked down at the floor in an attempt to hide his______(embarrass).
【单选题】It is quite apparent that the aging population in China will cause _____ heavy pressure on ____ whole society in the future .
A.
a, /
B.
/ ;/
C.
a ; the
D.
/ ; the
【单选题】He looked down from the mountain to the valley() .
A.
before
B.
beneath
C.
beyond
D.
behind
【单选题】According to the article, Ashkenazim are related to the Jewish people in ______.
A.
the whole Europe and Eastern Asia
B.
Eastern Europe and a few other European countries
C.
Eastern Europe and a few Asian countries
D.
Eastern Europe and Germany
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