题目内容

Memorizing pre-prepared speaking test answers often sounds ___. This approach is not recommended

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to improve this skill build on what you say by adding more ____ in your answers -- but make sure these are relevant to the question

In part 3 particularly you can develop answers by including reasons, comparisons or personal____

The key to improving fluency is to ____ using English in everyday communication as much as possible.

已知A为3阶实对称矩阵，则A的特征值可能是（）.

A. 1,2，i
B. 1，2i，-1
C. 2,3，1-i
D. 1,1，1