In the USA in 1967, a man reported ________ UFO (unidentified flying object).
A: X
B: a
C: an
D: the
A: X
B: a
C: an
D: the
举一反三
- 中国大学MOOC: In the USA in 1967, a man reported ________ UFO (unidentified flying object).
- What is an UFO? A: It is an Unknown Flying Object. B: It is an Unidentified Flying Object. C: It is an Unknown Flowing Object. D: It is an Unidentified Flowing Object.
- People use the word "unidentified" to describe the reported flying objects .because what these objects are is still unknown.
- A strange flying object seemingly in the backyard.
- Seeing an unidentified man walking into the plant, the doorman stopped him. A: unrecognized B: unimportant C: impolite D: unfriendly