照射量的SI单位是()
A.Ci
B.Bq
C.C/kg
D.R
E.Rad
参考答案:C
I think ______ necessary for us ______ the birds. [ ]
A. it ; protect
B. its; to protect
C. it's ; protecting
D. it; to protect
神是“三位一体”的神,但是“三位一体”这四个字在圣经里是无法找到的。