2. 外语
  3. With the help of the space-shuttle carded radar, archeologists found ______. The stream-rounded pebbled and Stone-Age axes whic

With the help of the space-shuttle carded radar, archeologists found ______. The stream-rounded pebbled and Stone-Age axes whic

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问题 With the help of the space-shuttle carded radar, archeologists found ______.
The stream-rounded pebbled and Stone-Age axes which were found along the ancient fiver banks show that
选项 A、an early human civilization once existed along the old river banks
B、ancient people didn’t know how to make weapons
C、most species of animals in Sahara have disappeared
D、early humans were good at fighting with sharp weapons
答案A
解析 该题也与细节相关，利用“pebbles，Stone-Age axes”作为答案线索词，这样在第4段第句找到直接答案相关句：Archeologists dug pits along the old river banks and found clues to the past： stream-rounded pebbles(鹅卵石)，Stone-Age axes，broken ostrich(鸵鸟)eggshells，and the shells of land snails． The archeologists were quite pleased with these findings...Now we know that early humans were living on the banks of old rivers, and left their beautiful tools behind.划线结构的内容与A(在古代河岸的两旁曾经出现过人类早期的文明)一致。
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