你能帮帮他们吗
The traffic is always very heavy in some large cities,espcia
1年前
有一台额定功率是55kW的拖拉机,若保持在额定功率下工作,在甲地上耕地时,10分钟内匀速前进了1200m;在乙地上耕地时
1年前
If you want to grow a beard you must stop shaving.
1年前
this could be a temporary problem or your phone may not be p
1年前
若干个苹果苹果,7个7个的数多1个:8个8个的数多2个:9个9个数正合适,一共有多少个苹果?
1年前