登记结算公司及其分机构有责任为投资者免费提供查询开户资料、证券余额及变更的服务。
参考答案：错
写作。
根据下面提供的情景，写一段接续文字。字数50-80。
You and Tom are in the same class and are good friends. Today he is absent. Miss Louise, your head
teacher, asks you where Tom is. You know what happened to him. You tell Miss Louise the following story:
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社会阶层细分属于（）
A.人口细分
B.心理细分
C.地理细分
D.行为细分
