根据第三周视频讲座中的信息和时间线，回答以下问题。 以下哪句话最准确（时间轴上用 X 标记）？单项选择题

题目图片
A

对电动汽车技术的研究始于五年前。

B

每年进行两次电动汽车技术研究。

C

研究人员对电动汽车技术进行了多年的研究。

D

明年将继续开展电动汽车技术研究。

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