The earth is about _______ as themoon.

The planet Neptune is about 30 times ______ from the Sun as Earth is.A．farB．as farC．more f

The room is about ______ in diameter as the hall.A．one－third as largeB．as one－third largeC

The sunspot hurricane is about______times higher than a tropical hurricane on Earth.A．10B．

The salinity of the earths oceans is about______.A．thirty－five part per thousandB．thirty－f

Just as the soil is a part of the earth,______the atmosphere.A．at it isB．the same isC．so i

The second paragraph is mainly about ______.A．TV as the sustaincr of American lifeB．TV as