What makes the working conditions of the children worst in the glass industry?
A. Dark dingy cells without light and air
B. Dazzling and sparking of welding light
C. High temperature
D. All of these
Answer:D
What makes the working conditions of the children worst in the glass industry?
A. Dark dingy cells without light and air B. Dazzling and sparking of welding light C. High temperature D. All of these