单选题
It takes much time to solve the problem one by one. Can we generalize common（ ）to apply to similar problems?
问题1选项
A.means
B.techniques
C.tips
D.solutions
A.means
B.techniques
C.tips
D.solutions
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It takes much time to solve the problem one by one. Can we generalize common（ ）to apply to similar problems?
