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【单选题】
A与B是互不相溶的两种液体，A的正常沸点是80℃，B的正常沸点是120℃，将A与B混合组成一个体系，则该体系的正常沸点（ ）。A.
小于 80℃
B.
大于 120℃
C.
介于 80℃ 与 120℃ 之间
D.
无法确定范围
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举一反三
【单选题】Every minute must be made full use ______ at the preparations for the exams.
A.
of to work
B.
of work
C.
of working
D.
to working
【单选题】下列关于风媒花的适应性特征说法错误的是( )。
A.
花小，被没有鲜艳的颜色甚至退化，形成密集的花序，常先叶开花
B.
雄蕊花丝细长，开花时伸出花外
C.
花粉粒体积大，有粘性物质分泌
D.
雌蕊柱头较长，常呈羽毛状等形状
【单选题】Every minute must be made full use of ______ our lessons, for the college entrance exam is coming.
A.
going over
B.
to go over
C.
go over
D.
our going over
【单选题】Every minute must be made full use of ____ our lessons, for the final examination is coming.
A.
going over
B.
to go over
C.
go over
D.
to going over
【简答题】Every minute must be made full use of ________ our lessons, for the college entrance exam is coming. [A] going over [B] to go over [C] go over [D] our going over
【单选题】Every minute must be made full use of________spoken English.
A.
to practise
B.
practising
C.
to practising
D.
practice
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