题目

完形填空Nine 1700-year-old bricktombs have been discovered in northwest China's Xinjiang. Experts say that theycan1valuable clues for the research ofexchanges (交换；交流) between the centralChinese government at that time and2WesternRegions. It is the3time ancient tombs with typicalcharacteristics of China's main Han nationality have been found in the Uygurethnic region. 4fromBeijing, Shanxi and Xinjiang concluded that the tombs were5between the middle and late thirdcentury and fourth century. The tombs were unearthedduring the6of a road earlier thisyear in Kuqa county, 740 km from X在横线里填上“＞”、“＜”、“=”． 6.49÷1.3＜＜6.49   2.7×1.01＞＞ 2.7 4.6÷0.001==4.6×1000   6.2÷0.98＞＞ 6.2．