Li Ming __________ to school.[ ]
A. goes
B. go
C. going
答案：A
What ___________ Cathy and Glora __________ now?[ ]
A. are, doing
B. do, do
C. did, do
D. are, do
胸片上常不能看到的骨结构有（）
A.锁骨
B.肋骨
C.肩胛骨
D.腰椎
E.胸椎
