• 2022-05-29 问题

    The white cliffs of Dover are an example of a/an ( ) chalk deposit. A: foraminiferan B: radiolarian C: heliozoan D: difflugian E: arcellian

    The white cliffs of Dover are an example of a/an ( ) chalk deposit. A: foraminiferan B: radiolarian C: heliozoan D: difflugian E: arcellian

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