Li Lei has a good friend.     name is Jim. He is     the USA. He likes      food very much. He can      English and      Chinese clothes. Li Lei and Jim are in the same     .They are classmates. They go to school five    a week. At school they play    after class. They don’t go to school on Saturdays and Sundays, they stay at      and do homework, sometimes they paint. They like swimming,       .

小题1:A. He                 B. His                    C. He’s 

小题2:A. from               B. to                     C. of   

小题3:A. China              B. Chinas               C. Chinese  

小题4:A. say                  B. speak                C. talk    

小题5:A. eat                 B. ask                  C. buy

小题6:A. class                B. shop                 C. bank 

小题7:A. months             B. days                 C. weeks   

小题8:A. a basketball             B. the basketball        C. basketball  

小题9:A. home               B. school                C. shops    

小题10:A. also                 B. well                  C. too

两个物体a、b同时开始沿同一条直线运动。从开始运动起计时，它们的位移图象如右图所示。关于这两个物体的运动，下列说法中正确的是（）

A.开始时a的速度较大，加速度较小

B.a做匀减速运动，b做匀加速运动

C.a、b速度方向相反，速度大小之比是2∶3

D.在t=3s时刻a、b速度相等，恰好相遇