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【单选题】
在相同温度下,下列两个反应放出的热量分别以 Q 1 和 Q 2 表示, Q 1 和 Q 2 相比较的结果是 CH 4 (g)+2 O 2 (g) → C O 2 (g)+2H 2 O ( g )+Q 1 ; CH 4 (g)+2 O 2 (g) → C O 2 (g)+2H 2 O (1)+Q 2A.
Q 1 >Q 2
B.
Q 1 2
C.
Q 1 =Q 2
D.
无法确定
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举一反三
【单选题】Though she is over 60 years old, she still chooses work _____ retirement.
A.
over
B.
at
C.
on
D.
upon
【简答题】He glanced over at her, ______ that though she was tiny, she seemed very well put together. A. noting B. noted C. to note D. having noted
【单选题】He glanced over at her, ____that though she was tiny, she seemed very well put together.
A.
noting
B.
noted
C.
to note
D.
having noted
【简答题】Even though she had read the report carefully over and over, she glanced it ________ before handing it in.
【单选题】Girl ____, she is much naughtier than a boy.
A.
although she was
B.
though she is
C.
though was she
D.
although was she
【简答题】矛盾的斗争性在事物发展中的作用是( )
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