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7.The science teacher demonstrated the process of turning solid gold into liquid. A．elaborated B．showed C．devised D．simplified

參考答案： B

解析：本題考查動(dòng)詞辨析。根據(jù)句意，科學(xué)老師展示了一個(gè)過(guò)程，因此選項(xiàng)B "showed"（展示）符合句...

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