阅读短文，并根据短文内容完成下列各题。

      Hello! My name is Maddy. I'm a boy. I have a brother and a sister. I am younger than my brother. I am

older than my sister. I live in Canada. My grandfather lives in the U. S.

1. What's the author's (作者的) name?

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2. Is Maddy older than his brother?

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3. Is his sister younger than him?

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4. Where does Maddy live?

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5. Does his grandfather live in the U. S.?

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沉降观测资料的整理主要包括各类基础资料和外业测量资料的（），外业测量成果的分类汇总，沉降观测成果的分析，各类资料的入档保存。

A.集中

B.是否齐全

C.收集检查

D.是否正确