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题目内容
（华北水利-土木工程-大学英语（3））
15(5.0分)
The natural ______ of our country are leaking away through misuse.
A)
resources
B)
sources
C)
materials
D)
fuels
The natural ______ of our country are leaking away through misuse.
A)
resources
B)
sources
C)
materials
D)
fuels
参考答案
