157 -According to the passage, the discovery of the clay tablets in Egypt --- .
A) has upset a great many historians interested in this area
B) has proved that the Sumerians were the first to write
C) apparently took place in approximately 3000 BC
D) will change the current understanding of the history of writing
E) has not yet been officially confirmed by authorities
158 -The clay tablets mentioned in the passage ----- .
A) were used as ancient forms of postage stamps
B) are the earliest examples we have of Egyptian art
C) reveals some information about the economic dealings of ancient Egyptians
D) were specially created to be buried with King Scorpion
E) originally belonged to the Sumerians of Mesopotamia