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问题
选择题
There are some nice pictures _____ the wall.[ ]
A. at
B. with
C. to
D. on
答案
答案：
D
选择题
It is necessary
me
my studies before a new term.
A. for, to make a plan for
B. of, making a plan for
C. for, to make a plan of
D. of, making a plan of
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名词解释
矿化作用
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