在管道工程的常用技术标准中,石油天然气总公司的代号为()。
A、YB
B、GB
C、SY
D、LD
参考答案:C
与漫画《“蟹”》(作者蒋跃新)所反映的哲理相反的是( )
A.一诺千金
B.年年岁岁花相似,岁岁年年人不同
C.色厉内荏
D.纸上得来终觉浅,绝知此事要躬行
He kept thinking of the question whether it was ____ for his father to change the habit of a life time in such a short time.
A.possibly
B.probable
C.likely
D.possible