These are Cara and Ben. They are twins (双胞胎). They are twelve. This is their bedroom. It's a nice room. There are two beds in the room. The yellow bed is Cara's and that green one is Ben's. The twins have one desk and two chairs. The chairs look the same. Cara's sweater is on his bed. Ben's coat is on his chair. Their clock, books and pencil-boxes are on the desk. Their schoolbags are behind the chairs.

某发达城市日前公布2016年中考“新政”：新居民子女在该市参加中考，符合条件者可与本地学生同等录取。这一“新政”有利于（    ）

①保障新居民子女的受教育权      ②推进教育公平，维护社会正义

③杜绝新居民中的不文明现象      ④普及义务教育，培养应试能力

Tom is very nice, but he does like to d____ (控制) the conversation.

世界的人口不但在不同时间增长速度不同，在同一时间段，不同国家的增长速度也不尽相同．读世界人口增长示意图及不同国家人口出生率、死亡率比较表，结合所学内容，完成下列问题．

不同国家人口出生率和死亡率比较表