1. Cave paintings were not officially regarded as art until......................______ ...............................2. Scientists are not always united in their views about...........................______ .............................3. Some paintings disappeared when open .............................______ ........................... .4. It was first believed that cave paintings were just ............................______ ..................................5. The theory that people lived in these caves is not supported by ..............______ ....................6. Drawings of ...............................______ ................................. a link with present-day art lessons.7. Examples found in caves outside Europe were painted ........................______ .......................... .

That caves of Altamira, which were __ in northern Spain, contain interesting paintings by early cave dwellers. A: found B: invented C: discovered D: created

Zhijin Cave and Shuanghe Cave are typical karst caves in Guizhou. ( )

Thousands of years ago,human beings have been able to communicate A: orally B: using cave paintings C: using books D: using papyrus

a large cave