A:①②③
B:①③④
C:②③④
D:①②④
There will be a basketball game tomorrow in our school. Class 1 will play a____ Class 2.
某赛车的左、右轮子的距离为2米,因此当车子转弯时,外侧的轮子比内侧的轮子多走了一段路.
Organic farmers, ____(因此), often prefer using natural waste from animals as fertilizer.