[单选题] 安装资料齐全；设计、制造、安装质量符合有关法规和标准要求；在设计条件下能安全使用的工业管道，其安全状况等级定为(　　)。
A.一级
B.二级
C.三级
D.四级

Acting is such an over-crowded profession that the only advice that should be given to a young person thinking of going on the stage is "Don’t" ! But it is useless to try to discourage someone who feels that he must act, although the chances of his becoming famous are slim. The normal way to begin is to go to a drama school. Then the young actor or actress takes up work with a theatrical company, usually as an assistant stage manager. This means doing everything that there is to do in the theatre: painting scenery, publicity (宣传 ), taking care of the costumes (舞台服装), and even acting in very small parts. It is very hard work indeed. The hours are long and the salary is tiny.
Of course, some people have remarkable chances which lead to fame and success without this long and hard training. Connie Pratt, for example, was just an ordinary girl working in a bicycle factory. A film producer happened to catch sight of her one morning waiting at a bus stop, as he d
A. as famous as the greatest actor of the world
B. playing the leading female role in a play
C. no less famous than the leading actor of the day
D. the most famous actress of the world

Culture is activity of thought, and receptiveness to beauty and human feeling. (1) of information have nothing to do with it. A merely well-informed man is the most useless (2) on God’s earth. What we should (3) at producing is men who (4) both culture and expert knowledge in some special direction. Their expert knowledge will give them the ground to start (5) , and their culture will lead them as (6) as philosophy and as high as (7) We have to remember that the valuable (8) development is self-development, and that it (9) takes place between the ages of sixteen and thirty. As to training, the most important part is given by mothers before the age of twelve.
In training a child to activity of thought, above all things we must (10) of what I will call "inert ideas"—— that is to say, ideas that are merely (11) into the mind without being (12) A. contained
B. received
C. squeezed
D. embedded