题目内容：
6. Which of the following statements is consistent with the passage?A. The writer agrees with many Americans and Europeans except for the two facts mentioned in the passage.
B. In the history of science, people sometimes have to discover a fact a second time.
C. According to the writer, we only began to really explore the world in the sixteenth
century.
D. The ancient Egyptians had very little knowledge about the stars.
参考答案：