This passage mainly discusses how ______. [br] The machine discussed in this pas

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问题 This passage mainly discusses how ______. [br] The machine discussed in this passage was the ancestor (祖先) of today’s ______.

选项 A、typewriter (打字机)
B、television
C、record player
D、computer

答案 D

解析文章倒数第一句提到，Thus，the great grandfather of the modern computer was born．暗示了它就是计算机的雏形。

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