How stone tools were made

Which period of human life does the video reflect? *

1 point

Stone Age

Bronze Age

Iron Age

Silver Age

Around when did people start making stone tools? *

1 point

3 million years ago

2.5 million years ago

2 million years ago

1.5 million years ago

Which of the following was not a purpose for the Old Stone Age humans to make stone tools? *

1 point

Cutting woods

Building houses

Killing animals

Hunting animals

Which of the following was not used by the ancient humans to polish (磨製) stone tools? *

1 point

Wood

Ivory (象牙)

Antler (鹿角)

Rubber