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好吧问答库 > 请教几道英语题解释一下为什么。感激不尽！

请教几道英语题解释一下为什么。感激不尽！

2025年04月07日 13:33

有1个网友回答

网友（1）：

1、B, which 链接的是 communication （信息传递的方式）
2、D, 表原因，机器是塑料做的，所以重量轻。
3、having launched，of 后面是一个名词性的短语，所以动词应用分词形式，又因为是完成时，所以是 having.

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