用惰性电极电解2L1mol•L-1的CuSO4溶液,在电路中通过0.5mol电子后,调换电源的正负电极,电路中又通过0.1mol电子,此时溶液中的c(H+)是(假设通电后溶液的体积不变)
( ) --- What animals do you like?--- I like ___________. A. rabbit B. fish C. a bird
( ) They don’t have sweets. A. some B. any C. a
( ) The rabbit has tail. A. a short B. a big C. a long
( )My animal friends have no legs arms. A. or B. and C. with
( ) She two goldfish, but I no goldfish. A. have; have B. has ; has C. has ; have