Which of the following sounds is diphthong?A、[ai].B、[t].C、[dv].D、[img]2015m12

游客2024-11-24 48

问题 Which of the following sounds is diphthong?

选项 A、[ai].
B、[t].
C、[dv].
D、

.

答案 A

解析四个选项中只有[ai]是双元音。

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