①每年役使三四百万人去兴修豪华的宫殿、陵墓和长城

②每年有几十万人攻打匈奴和戍边

③制炮烙之刑惩罚犯法的人

④实行族诛

⑤实行连坐

北京路小学五年级4班共有50名学生。这个班2002～2007年拥有电话和电脑的家庭户数如下表。

从统计数据中，你还想到了什么?

从下面方框中选出与下列各句中画线部分意思相同或相近，并能替换画线部分的选项。

My mother usually goes to work at ____ about 7:30 in the morning,
John is a clever boy. He ____ does well in all the subjects,
Dave's father was ill two days ago, so he had to ____ take care of him at home.
Last night, Tom was not ____ in. He went to a movie with his friends.

下列不利于聚落形成与发展的因素是（　　）