问答题

Nowadays we can see American films and TV programs pouring in,fast food res taurants popping up in our cities, and many other imported products dominating our markets. Many people are happy to see them whereas others worry about such trends. Give your opinion in an essay of no less than 250 words.

【参考答案】

[参考范文]
Nowadays people are increasingly aware that more......

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问答题

Bungling (笨手笨脚的) space organizations apart, the only mode of travel open to microbes seems to be meteorites (流星). Most of these are small bits of junk from the asteroid (小行星) belt that have gone off course. But some are rocks that have been flung into space from the surfaces of planets as a result of those planets having been struck by even larger bits of rock—decent-sized asteroids or comets.

问答题

If a rock is large enough, the heat generated as it is thrown clear will be negligible except at its surface—where, if anything, melting may even produce an airtight skin to protect any microbes deeper down from the unpleasant vacuum of space.

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