1、【 精品教育资源文库 】 Unit 1 Festivals around the world 过渡句题 (七选五 ) 方法指导 在七选五中对过渡句的考查主要包括段落内过渡句和段落间过渡句。 1)段落内过渡句 :阅读空格前后相邻内容 ,挖掘内在逻辑关系 ,注意衔接词和体现逻辑关系的信号词 ,如 therefore、 thus、 so、 but、 however、 on the contrary 等 ,然后与选项中的关键词建立联系 ; 2)段落间过渡句 :阅读上一段的段尾和下一段的内容 ,注意衔接词和体现逻辑关系的信号词 ,然后与选项中的关键词建立联系。 典 例引领 (2017 北京 ) 根据短
2、文内容 ,从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 Every animal sleeps, but the reason for this has remained foggy. When lab rats are not allowed to sleep, they die within a month. 1 One idea is that sleep helps us strengthen new memories. 2 We know that, while awake, fresh memories are recorded by reinforci
3、ng(加强 ) connections between brain cells, but the memory processes that take place while we sleep have been unclear. Support is growing for a theory that sleep evolved so that connections between neurons(神经元 ) in the brain can be weakened overnight, making room for fresh memories to form the next day
4、. 3 Now we have the most direct evidence yet that he is right. 4 The synapses in the mice taken at the end of a period of sleep were 18 per cent smaller than those taken before sleep, showing that the connections between neurons weaken while sleeping. If Tononis theory is right, it would explain why
5、, when we miss a nights sleep, we find it harder the next day to concentrate and learn new information our brains may have smaller room for new experiences. Their research also suggests how we may build lasting memories over time even though the synapses become thinner. The team discovered that some
6、 synapses seem to be protected and stayed the same size. 5 “You keep what matters,” Tononi says. A.We should also try to sleep well the night before. 【 精品教育资源文库 】 B.Its as if the brain is preserving its most important memories. C.Similarly, when people go for a few days without sleeping, they get s
7、ick. D.The processes take place to stop our brains becoming loaded with memories. E.Thats why students do better in tests if they get a chance to sleep after learning. F.“Sleep is the price we pay for learning,” says Giulio Tononi, who developed the idea. G.Tononis team meas ured the size of these c
8、onnections, or synapses, in the brains of 12 mice. 方法运用 语篇解读 本文为说明文。研究表明 ,睡眠期间脑细胞之间的关联会减弱 ,从而使大脑为新的记忆腾出空间 ,但是对于重要的记忆 ,大脑则会对其加以保护。 1.C 细节句。上句指出 ,当不允许实验室的老鼠睡觉时 ,它们在一个月之内就死去了。本句是上句的延伸 ,由动物转移到了人类。 C 项符合语境 ,意为 “ 同样 ,人几天不睡觉的话也会生病 ” 。 2.E 细节句。上句指出睡眠有助 于加强新的记忆 ,下文对此进行了解释。本句应该是对这个观点的回应 ,E 项 “ 那也就是为什么学生在学习之后如
9、果有机会睡觉的话 ,他们就会考得更好 ” 符合语境。 3.F 过渡句。下段首句指出 “ 现在我们有最直接的证据证明他是正确的 ”, 由此可知本句应指出某人的观点。结合本段提出的 “ 睡觉期间神经元之间的关联减弱 ,从而为第二天要形成的新记忆腾出空间 ”, 可以判断 F 项符合语境。 4.G 过渡句。下句的 synapses 以及 the mice 为关键线索。下文指出了老鼠在睡完一觉后和睡觉前“synapses” 的不同 ,所以本句应该指出本次试验 的内容 ,故 G 项符合语境。 5.B 细节句。上句指出 ,研究团队发现某些神经突触似乎得到了保护 ,并未发生变化 ,这正是对某些重要记忆的保护 ,故 B 项正确。 -温馨提示： - 本文档仅为 【 全套资料之一 】 ，欢迎点击下方按钮链接，下载全套资料！ 请点此到 下载本文全套资料
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