Which is not included in the Eskimos' daily diet（）

单项选择题Which is the main topic of this passage（）

A．Modem ideas are beginning to influence the Eskimos.
B．Why are the Eskimos able to live in Arctic regions
C．The Eskimos are adaptable.
D．Eskimos' way of life has not changed very much.

单项选择题The expression play safe probably means （）.

A．to write carefully
B．to do as teachers say
C．to use dictionaries frequently
D．to avoid using words one is not sure of