黃金閱讀的 Powering the Industrial Revolution - 英檢

我想請問第13題的選項5:
In the 1790s William Murdoch developed a new way of lighting houses and
streets using coal gas.

為什麼這個選項不能選呢？

還有選項3:
Until the 1830s，Britain was the world’s major producer of steam engines.

這個選項為什麼也不能選？


謝謝。

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