题目

如图 ，一个物体从 A 点出发向右运动 10m 到达 B 点，然后向左运动 4m 到达 C 点。在整个过程中，物体的位移大小为A. 4m B. 6m C. 10m D. 14m 答案：【答案】B【解析】位移大小为从初位置指向末位置的有向线段的长度，则x=AC=10-4=6m，方向从A指向C，即向右．故选B． 阅读理解 　　My friend Jane is a sports fan(爱好者)．She has a great sports collection．She has three soccer balls，five baseballs，six volleyballs and two basketballs．They are all under her bed．Jane plays basketball very well．She likes Kobe．She thinks he is the best(最好的)basketball player in America．Jane plays baseball very well，too．Now she is in her school baseball club． (1) Jane has ________ volleyballs． [　　] A． six B． five C． three D． ten (2) Kobe is a ________． [　　] A． student B． basketball player C． teacher D． baseball player (3) Jane plays ________ very well． [　　] A． soccer and basketball B． volleyball and baseball C． basketball and baseball D． tennis and basketball (4) Jane is ________． [　　] A． in her school basketball club B． an English teacher C． a sports fan D． Kobe's sister (5) We can find ________ under Jane's bed． [　　] A． some notebooks B． a watch C． three books D． a great sports collection