【简答题】Now teachers, faced with children who have been developing at their own pace for the past 15 years, are realizing we’ve made a terrible mistake.
【单选题】旅游企业多为劳动密集型的主要原因是( )
【简答题】如图的正方形的周长是28cm,求梯形的面积.(单位:cm)
【简答题】We’ve made a________ of engine Number Two from the cabin. The __________ has fallen off
【单选题】You must be exhausted after such a long journey. We’ve made a hotel ____________ for you two. Let’s go.
【简答题】一质量 m = 2kg 的质点,其运动方程为 x = 10 + 20 t - 5 t 2 (SI) ,则质点所受合外力为 N
【简答题】在△ABC中,AC=21cm,BC=28cm,AB=35cm,求△ABC的面积。