2. 外语
  3. With the help of the space-shuttle-carried radar, archeologists found The stream-rounded pebbles and Stone-Age axes which were

With the help of the space-shuttle-carried radar, archeologists found The stream-rounded pebbles and Stone-Age axes which were

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问题 With the help of the space-shuttle-carried radar, archeologists found
The stream-rounded pebbles and Stone-Age axes which were found along the ancient river 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
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