________evidence that language acquiring ability must be stimulated.

A. If being     B. It is   C. There is   D. There being

Evidence obtained from observation and experiment is often used to _____ a scientific theory.

　　A. confirm    B. confine    C. conform    D. conceive

Evidence came up _______ specific speech sounds are recognized by babies as young as 6 months old.

A. what B. which?

C. whose D. that?

 Evidence obtained from observation and experiment is often used to _____ a scientific theory.

   A. confirm    B. confine    C. conform    D. conceive

Evidence obtained from observation and experiment is often used to _____ a scientific theory.

A. confirm       B. confine         C. conform       D. conceive