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  3. What is the main idea about the passage? In the sentence "The second stage then ignites, providing the energy necessary to lift

What is the main idea about the passage? In the sentence "The second stage then ignites, providing the energy necessary to lift

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问题 What is the main idea about the passage?
In the sentence "The second stage then ignites, providing the energy necessary to lift the satellite into orbit.", "ignites" means ______ .
选项 A、starts
B、blasts off
C、departs
D、fires
答案D
解析 将四个选项一一放进去并结合上下文，尤其是下文中“another engine fires and…”中的“fire”来看，D项“点火”更合适。
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