_______twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.
举一反三
- list类型变量需要定义在函数外部，在函数内部可直接被使用。 以下代码输出结果是（ ）[img=490x145]17d60e52c603957.png[/img] A: [‘bus’] [‘car’, ‘truck’, ‘bus’] B: None C: [‘car’, ‘truck’, ‘bus’] D: [‘car’, ‘truck’]
- list类型变量需要定义在函数外部，在函数内部可直接被使用。 以下代码输出结果是（ ）<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202105/bf1a235171c8475184167fb4512e7763.png" /> A: [‘bus’] [‘car’, ‘truck’, ‘bus’] B: None C: [‘car’, ‘truck’, ‘bus’] D: [‘car’, ‘truck’]
- Investigating a private car in a city, the survey unit is ( ) A: Every family in the city with a private car B: All families with private cars in the city C: All private cars in the city D: Every private car in the city
- --You must obey every word of mine. ---____ I don’t?
- Which of the following cannot be referred to as a vehicle? A: truck B: car C: bus D: balloon