单选题
The stream-rounded pebbles and Stone-Age axes which were found along the ancient river banks show that
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.
【正确答案】
A
【答案解析】
提交答案
关闭