The author uses the example of a rattle to show that ______.A.in toy - making there is a c

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The author uses the example of a rattle to show that ______.

A.in toy - making there is a continuity in the use of materials

B.it often takes a long time to introduce new technology into toy -making

C.even the simplest toys can reflect the progress of technology

D.even a simple toy can mirror the artistic tastes of the time

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