The term "New Australians" came into vogue in the 50s and 60s, which implied that the goal of immigration was assimilation and that migrants would place their new-found Australian identity ahead of the ______ context from which they had come.

A．Earth is a more active planet than Venus and Mars
B．Earth reflects a brighter light curve than Venus and Mars
C．Earth shows oceans, deserts, forests and clouds, while Venus and Mars don't
D．Earth reflects sunlight in an ebb-and-flow manner

A．Scientists at the Princeton University want to find that distant planets are like our Earth.
B．Among all the terrestrial planets Earth's light curve is the most complicated.
C．Spectral study of the light will see no development of itself because it is static.
D．Spectral reading is used as a supplementary method to the study of the change in light over tim