判断题
对于不同的高分子而言,在相同的温度下,链段越短,高分子的柔性越小。
对于不同的高分子而言,在相同的温度下,链段越短,高分子的柔性越小。
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单项选择题
( )is often used in conversation with your friends, classmates, and family.
( )is often used in conversation with your friends, classmates, and family.
A.Colloquial language
B.Informal language
C.Formal language