题目

完形填空Sam lives in New York. His father   1   a shop there and his mother is a taxi driver. He is seven years old now and starts school this autumn. The school is a little far   2   their shop,   3   his mother drives him   4   school every day, Sam is never __5   for class. His teacher likes him very much.Today is Monday. Miss Green is teaching the class to count   6   one to ten.Sam is studying hard. Soon he can count. Miss Green is   7   and asks , “How many people are there in your   8   ,Sam?”Sam stands up and says, “Two, Miss Green.”“  9  �如图所示，一箱苹果沿着倾角为θ的斜面，以速度v匀速下滑．在箱子的中央有一个质量为m的苹果，它受到周围苹果对它的作用力的方向（　　）A．沿斜面向上B．沿斜面向下C．竖直向上D．垂直斜面向上