5.To avoid unintended ambiguity

A double negative giving an unintended positive sense is an error. ( )

5.To avoid unintended ambiguity A: 正确 B: 错误

This can happen for a variety of reasons, and these reasons can be unintended as well as ________ A: evident B: deliberate C: rigid D: retreat E: inevitable

Which of the following are reasons why the internet, smartphones or self-tracking devices have emerged? A: Deliberate choices B: Advantageous circumstances C: Complex mixture of intended and unintended consequences D: All of the above