【单选题】In the opinion of many Americans and Europeans, we only began to really explore our world in the sixteenth century. According to them, the sailors of the ancient world did not explore distant parts of...
A.
According to the writer, we only began to really explore the world in the sixteenth century.
B.
In the history of science, people sometimes have to discover a fact a second time.
C.
The ancient Egyptians had very little knowledge about the stars.
D.
The writer agrees with many Americans and Europeans except for the two facts mentioned in the passage.