Is this _____________ watch?[ ]
A. I
B. my
C. me
D. mine
答案：B
It is a good time ______. [ ]
A. go hiking
B. to go hiking
C. going hiking
D. went hiking
正常Ga显像，常不显影的脏器是（）。
A.肝脏
B.骨骼
C.脾脏
D.甲状腺
E.肠腔
