In recent years, a growing body of research has shown that our appetite and food intake are influenced by a large number of factors besides our biological need for energy, including our eating environ

下面（）文件中包含用户id（uid），工作目录，和登录后的shell信息。 A: /etc/security/passwd B: /etc/security/user C: /etc/security/environ D: /etc/passwd

What has happened to the Amazon jungle A: Highways have been constructed through the jungle to help ease the traffic in the cities. B: Jaguars, parrots and deer that once inhabited the jungle have left because the place was getting too hot for them. C: The land has been cleared for growing soybeans because it is the most popular Brazilian food. D: Fast economic development has brought devastating changes to the natural environ- ment in Brazil.