forward(100)等价于backward(-100)。（）
举一反三
- Python语句 ： a>=0 and a<=100 等价于语句：0<=a<=100。
- price BETWEEN 50 AND 100 等价于 price>50 AND price<100。( )
- When installing a handsaw blade, you should ( ) A: make sawtooth face forward B: make sawtooth face forward or backward C: make sawtooth face backward D: neglect sawtooth direction
- Group 5 is ______group. A: Twist B: Armstand C: Forward D: Backward
- Deductive reasoning is a __________ approach. A: bottom-up B: forward C: backward D: top-down