Birds learn to fly by _____ .
A: preys
B: instinct
C: referees
A: preys
B: instinct
C: referees
举一反三
- Birds learn to fly by _____. A: referee B: prey C: instinct D: sporty
- Birds of a feather______together. A: flock B: fly C: cluste
- When birds _______, they sometimes fly in formation.
- 【单选题】A sudden noise made all the birds in the tree fly ________. A. in all direction B. in the directions C. in all directions D. to all directions
- From the passage we learn that Judith was the first woman________. A: to walk around the world B: to brave the storm C: to cover the longest distance D: to fly round the world