Mother forgot _____ that interesting book for me. [ ]
A. to buy
B. buy
C. buying
D. buys
A
Ga炎症显像时,Ga成人常用剂量是()
A.37MBq
B.185~370MBq
C.555~740MBq
D.740~925MBq
E.>925MBq
在数据字典中,表达循环(重复) 数据结构的符号是
A.()
B.[]
C.{}
D.+