- 试题详情及答案解析
- When the plane ____, all the passengers on board should turn off their mobile phones.
| A．takes in | B．takes out |
| C．takes off | D．takes up |
- 答案：C
- 试题分析：句意：当飞机起飞的时候，所有飞机上的乘客都应该关掉手机。A．takes in理解，吸收，B．takes out拿出，C．takes off脱下，起飞，D．takes up拿起，从事，所以选C。
考点: 考查动词短语