2016年高考语法填空题(涉及the first后接不定式被动式还是过去分...

▲看了两位老师的解答，很受启发。但另一个问题又来了，在我们的英语教材（牛津英语模块五（Unit 3—Reading—The perfect copy）中有这样一段：Cloning is producing an exact copy of a plant or an animal using its cells. The first mammal to be cloned successfully from an adult cell was dolly the sheep. She was b...

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