Like any other (constant) repeated action, speaking (has to) be learned, but once it (is learned),it becomes a generally (uncons

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问题 Like any other (constant) repeated action, speaking (has to) be learned, but once it (is learned),it becomes a generally (unconscious) and apparently automatic process.

选项 A、constant
B、has to
C、is learned
D、unconscious

答案A

解析 应改为constantly,因为修饰repeated,应用副词形式。
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