One of the __________ inventions of the century was the holograph.
举一反三
- In the 20th century Dr. Joseph Needham____________the idea of the Four Great Inventions and mentioned that China had achived many of ________________.
- One of the first inventions of Edison was an improvement of Alexander Bell’s telephone.
- Which one does not belong to the four great inventions of ancient China?
- 中国大学MOOC: Which one is not the Great Four Inventions in ancient China?
- One of the best ______ of the 20th century is the mobile phone.