细菌有致育性的结构为（） A.荚膜 B.鞭毛 C.普通菌毛 D.性菌毛 E.芽胞

下面表格反映的是Andy一家10年来的变化，请你根据其内容，以Changes to Andy’s family为题，写一篇调查报告。

	Ten years ago	Now
Flat	A small flat with two rooms	A big flat with ten rooms
Vehicle	Two bikes	A car
Appliance	A 21-inch TV set	A big TV set and two small ones

要求：
1. 内容充实，覆盖要点；
2. 报告中要包含总结和感想；
3. 70词左右，开头已经给出，不计入总词数。
Changes to Andy’s family
Great changes have taken place to Andy’s family in the past 10 years.
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