1. Some second parts are considered preferred because they are positive responses.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- 1. Some second parts are considered preferred because they are positive responses.
- __________ to some parts of South America is still difficult, because parts of the continent are still covered with thick forests.
- It is so difficult to ______ the bottom of the ocean because some parts are very deep.
- It's sorry difficult to___ the bottom of the ocean. Because some parts are very deep.
- Barking dogs cannot be considered an externality because externalities must be associated with some form of market exchange.