18.Edison__________the electric bulbs over one hundred years ago.
A: found
B: discovered
C: thought
D: invented
A: found
B: discovered
C: thought
D: invented
举一反三
- It is well known that Tomas Edison ______ the electric lamp. A: discovered B: developed C: found D: invented
- Questions 5 to 7 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now listen to the conversation. When did the story happen A: One hundred years ago. B: Two hundred years ago. C: Three hundred’ years ago. D: Four hundred years ago.
- The Arabians began to drink coffee around one hundred years ago.
- When was the man in New York A: About two years ago. B: About one year ago, C: About three years ago.
- One hundred years ago , what percentage of the human population lived in cities?