询问和回答物品拥有情况。
掌握轻声词汇，进一步掌握上声变调，运用课文对话询问和回答姓名和国籍。
Grasp the neutral tone words, further study on the modulation of the 3rd tone, make dialogues of inquiring about name and nationality with sentence patterns from the text.
在交互系统中，用户与计算机之间进行一系列询问和回答，就如同两人之间进行的会话。
In an interactive system a series of interrelated inquiries and responses be tween the user and the computer analogous to a conversation between two people.
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