中国大学MOOC: They would break their legs if they go down the Black Run.
举一反三
- They would break their legs if they go down the Black Run. A: 正确 B: 错误
- "Diseconomies of scale" occur in ( ) A: the long run, but not the short run. B: the short run, but not the long run. C: both the short run and the long run. D: neither the short run nor the long run.
- The man decided to go down into the basement and break __________ the door. A: up B: down
- The driver examined his car carefully lest it ______ on the way. A: breaks down B: broke down C: would break down D: should break down
- The man decided to go down into the basement and break __________ the door.