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比较大小(填“>、<、=”)沸点:乙醇乙醚HBrHCl
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比较大小(填“>、<、=”)键的极性:ZnO__ZnSNF3__NH3
Listen to a passage and match the events in Column A with the place and time in Column B and Column C.[音频]
Listen again and decide whether the following statements are true (T) or false (F).[音频]Women have been allowed to take part in the games since the Olympics started.
The Winter Olympics are usually held two years after the Summer.
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