中国大学MOOC: The gunpowder was firstly invented by alchemists while attempting to make an elixir of immorality.
举一反三
- The gunpowder was firstly invented by alchemists while attempting to make an elixir of immorality. A: 正确 B: 错误
- 中国大学MOOC: Gunpowder was invented in China, not by a alchemists seeking the elixir of immortality, but by people seeking better weapons or even explosives.
- 中国大学MOOC: Laboratory-based efforts are attempting to make new forms of energy while mopping up carbon dioxide, an unwanted greenhouse gas, from the atmosphere.
- From the Warring States to the early Han Dynasty, the emperors and nobles asked some alchemists to make ___________________ to prolong human life to eternalness. ( ) A: elixir B: fire medicine C: dried fruit D: insecticide
- 中国大学MOOC: Alchemists are people who ( )