中国大学MOOC: To train dogs to fetch，trainers often start with a ( ).
举一反三
- 中国大学MOOC: Dog trainers usually train their dogs first to ( ).
- Nephrotic edema is characterized by A: Often start with the lower extremities B: Often start with the eyelids C: Often start with the back of the hand D: Often start with the lower back E: Often start at the joints
- 中国大学MOOC: What is the most important thing for dog trainers to do?
- 中国大学MOOC: The Train to the Clouds is a tourist train service in _____.
- 中国大学MOOC: Dogs usually have an _______ sense of smell.