不属于健康的生活习惯的是( )
A:生活有规律
B:合理膳食
C:偶尔吸烟
D:合理用药
________himself in work makes it possible for him to achieve his goal.
下列说法正确的是( )
中东地区是世界上最大的石油产区,石油资源集中分布在( )