[填空题]Newton’s theories lay the foundation for much of today’s science of physics.

[简答题] Somewhere from Newton Road to Polkeith

[简答题]a lay-over

[单项选择] Evolutionary theories. The Belgian George Lemaitre proposed the idea that about 20,000 million years ago all the matter in the universe — enough, he estimated, to make up a hundred thousand million galaxies — was all concentrated in one small mass, which he called the "primeval atom". This primeval atom exploded for some reasons, sending its matter out in all directions, and as the expansion slowed down, a steady state resulted, at which time the galaxies formed. Something then upset the balance and the universe started expanding again, and this is the state in which the universe is now. There are variations on this theory: it may be that there was no steady state. However, basically, evolutionary theories take it that the universe was formed in one place at one point in time and has been expanding ever since. Will the universe continue to expand It may be that the universe will continue to expand for ever, but some astronomers believe that the expansion will slow down and f
A. That new material is continually being formed.
B. That, in time, the universe will contract.
C. That the universe is expanding at present.
D. That" a big bang" started the expansion.

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