2013的相反数为-2013.
故选B.
Shirley,a real book lover,often brings home many books to read ____ the library. [ ]
A. in
B. for
C. by
D. from
监护主要包括( )。
A.自愿监护
B.指定监护
C.法定监护
D.遗嘱监护
E.委托监护