Sign language is said to be very picturesque and exact and can be used internationally except for （）

A．building bridges across them
B．driving generators into them
C．building dams across them
D．directing them into homes and factories

A．Awards vary in monetary value.
B．Ceremonies are held on December 10 to commemorate Nobel’s inventions.
C．Politics can play an important role in selecting the winners.
D．A few individuals have won two awards.