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单选题 38. What is the benefit of this two-way interaction?

A

It can smile back.

B

It can use microphone.

C

It can talk any topic.

D

It can change if necessary.

正确答案 :D

解析

38.【金标尺解析】根据第二段中的“This two-way interaction not only helps attract the students‘ attention, but also allows the program‘s developers to monitor their engagement, and make changes if needed.”即“ 这种双向互动不仅有助于吸引学生的注意力,还允许程序的开发人员监视他们的参与度,并在需要时做出更改”,由此可得出,其优势在于需要时,可以做出变化。故选D。