A:CT=GA
B:AT=GC
C:A+T=G+C
D:A+G=T+C
(1) She bought a ____ (bath) suit last Sunday.(2)I like doing some ____ (shop) at weekends.(3)She hasn't ____ (feed) the cat yet.(4)There are about ten ____ (well) in that village.(5)Has the camera been____ (pack) yet?
有关物态变化的现象.下列变化不同的一组是( )
天文四季中的冬季是一年中()