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【简答题】
把0，1，2，3，4，5，6，7，8，9这十个数字分别填在下面的方格里，每个数字在每题中只用一次，使各算式相等。 □+□=□+□=□+□=□+□=□+□ □-□=□-□=□-□=□-□=□-□
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举一反三
【单选题】With the development of modern society, some traditional customs are gradually . [ ]
A.
dying of
B.
dying out
C.
dying down
D.
dying off
【简答题】In the view of Freed, some traditional Indian patterns can be seen as an adaptation to the high ______.
【多选题】Some traditional practices in Spring Festival include:worship
A.
ancestor
B.
paper-cutting for window decoration
C.
sweeping the dust
D.
hanging calamus and moxa
【单选题】It can be seen form. time passage that in the second stage
A.
some traditional goods and services were not successful when provided by the home economy
B.
the market economy provided new goods and services never produced by the home economy
C.
producing traditional goods at home became socially unacceptable
D.
whether new goods and services were produced by the home economy became irrelevant
【单选题】水分子通过（）的作用可与另4个水分子配位结合形成正四面体结构。水分子通过（）的作用可与另4个水分子配位结合形成正四面体结构。水分子通过（）的作用可与另4个水分子配位结合形成正四面体结构。
A.
离子键
B.
范德华力
C.
氢键
D.
二硫键
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