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Until recently most people hold hostile attitudes towards_______.Some people view it as_____________while others consider it____________.

Recent research,however,shows that___________is of great benefit in many respects._________,scientists tell us,_____________.Surprisingly enough,____________also_______.The most remarkable thing about_______is that_______. Now we can draw the conclusion that_______.I strongly advocate that we should make good use of it to_________.

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直到最近，大多数人持敌对态度_______。有人认为它是_____________，而其他人认为它____________。然而，最近的研究表明，___________在许多方面是大有裨益。 _________，科学家告诉我们，_____________。令人惊讶的是_____。最了不起的事情对_______，_______。现在，我们可以得出这样的结论，_______，我极力主张，我们应该好好利用它来_________。