《地平线：进化缺环的命运探索之旅》在课上用鸡插英语课代表视频在线

　　Last year the discovery of a tiny fossilised jawbone hit the headlines. The jawbone, only a few centimetres long, and with 7 rows of teeth, had been found lying abandoned in a dusty museum where it had lain unnoticed for decades. It's rediscovery has caused a sensation in the world of palaeontology because scientists now believe it may be a tiny remnant of a "missing link", an ... (展开全部)