阅读理解
More than 3 million years ago, our ancestors(祖先)were already on the march, rising on two legs to search for food, seek greener lands and, above all, to grow in body and brain．Let’s meet some of them：
1．Australopithecus afarensis：
They had apelike(像猿一样的)faces and their brains were a third the size of modern humans’ brains．They lived in 3.9 million years ago．Fossils(化石)were found in Ethiopia(埃塞俄比亚)in 1974．
2．Paranthropus boisei：
Covered with fur, they had strong arms and gorilla-like(像大猩猩一样的)faces．They lived 1－2.5 million years ago．Fossils were found in Tanzania(坦桑尼亚)in 1959．
3．Homo habilis：
Homo habilis, which actually means “handy man”, was the first species to make and use primitive⑨ stone tools．They lived 1.6－2.2 million years ago．Fossils were found in Tanzania in 1960．
4．Homo erectus：
With skeletons(骨骼)very similar⑩ to those of modern humans, they were probably the first to use fire．They lived 30 000－1.8 million years ago．Fossils have been found in Africa and Asia since 1893．
5．Homo heidelbergensis：
They were skilled hunters who used spears to kill animals．Their bodies were similar to ours, although more muscular(肌肉发达的)and larger boned．They lived 200 000-500 000 years ago．Fossils have been found in Ethiopia, Germany, France and Spain since 1921．
6．Homo Neanderthal：
Their brains were at least as large as the average modern humans’, while their smaller bodies helped them deal with cold climates．They lived 30 000-230 000 years ago．Fossils have been found in France and Iraq since 1856．
