A survey suggests that nearly one in six children has difficulty to talk.A、to le

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问题 A survey suggests that nearly one in six children has difficulty to talk.

选项 A、to learn
B、learning
C、learn
D、learnt

答案 B

解析本题考查have difficulty doing sth．的结构。difficulty通常用于have difficulty(in)doing sth．的结构，意为“在……方面有困难”，其中介词in可省略。

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