Look at the four squares [■] that show where the following sentence could be inserted in the passage. Some historians believe they can be established. Where could the sentence best be added？ Click on a square [■] to insert the sentence in the passage.
A. Square Ａ.
B. Square Ｂ.
C. Square Ｃ.
D. Square Ｄ.
查看答案
The word its in the passage refers to
A. copper
B. bronze
C. metal
D. iron
According to paragraph 2, what happens as societies become more prosperous？
A. More goods are produced.
B. Walled cities are built.
C. Laws are instituted.
D. The size of families increased.
【C10】
A. dedication
B. suspicion
C. contemplation
D. speculation
According to paragraph 3, how was the class system structured？
An upper class and a lower class
B. Slaves, free people, and a ruling class
C. A king, an army, and slaves
D. Intellectuals and uneducated farmers and workers
微信支付 
支付宝支付