四六级听力特训：Day 5
暑期过半，下学期的四六级也快来咯，为了帮大家过级，我们为大家开辟新的板块——四六级听力特训。
每期包括 音频+题目+答案+中英文对照翻译+重难点词汇，大家先做题，最后再看答案哦！
今天的内容节选自How memories form and how we lose them? 上几期讲了记忆是怎么形成的，这期给告诉大家记忆是怎么丢失的。
今天的填空有点多，大家可要仔细听哦。
音频
填空
请听听力，在横线处填入单词或词组。
But how do some memories get lost? Age is one factor. As we get older, synapses begin to (1)___________, affecting how easily we can (2)___________memories.
Scientists have several theories about what's behind this (3)____________, from actual (4)____________ , the hippocampus loses 5% of its neurons every decade for a total loss of 20% by the time you're 80 years old to the drop in the production of neurotransmitters, like acetylcholine, which is vital to learning and memory.
These changes seem to affect how people retrieve stored information.
Age also affects our (5)____________. Memories are encoded most strongly when we're paying attention, when we're deeply engaged, and when information is meaningful to us.
Mental and physical health problems, which tend to increase as we age, (6)____________ our ability to pay attention, and thus act as memory thieves.
原文&翻译
(上下滑动查看）
答案
(1) falter and weaken
(2) retrieve
(3) deterioration
(4) brain shrinkage
(5) memory-making abilities
(6) interfere with
But how do some memories get lost? Age is one factor. As we get older, synapses begin to falter and weaken, affecting how easily we can retrieve memories.
但是，有些记忆怎么会丢失呢？年龄是个影响因素。随着我们年龄增大，神经元突触开始衰退和变弱，影响了我们读取记忆的难易程度。
Scientists have several theories about what's behind this deterioration, from actual brain shrinkage, the hippocampus loses 5% of its neurons every decade for a total loss of 20% by the time you're 80 years old to the drop in the production of neurotransmitters, like acetylcholine, which is vital to learning and memory.
科学家们有几个原理解释了这种退化背后的原因。从真正的大脑萎缩开始，海马体每十年失去5%的神经元，当你80岁的时候，你一共失去20%的神经元，这导致神经传递产物的下降，比如对学习和记忆至关重要的乙酰胆碱。
These changes seem to affect how people retrieve stored information.
这些改变可能影响人们读取那些存储的信息。
Age also affects our memory-making abilities. Memories are encoded most strongly when we're paying attention, when we're deeply engaged, and when information is meaningful to us.
年龄也影响了我们产生记忆的能力。当我们集中精力、完全投入的时候，当信息对我们来说非常重要的时候，深刻记忆就会生成。
Mental and physical health problems, which tend to increase as we age, interfere with our ability to pay attention, and thus act as memory thieves.
当年纪变大，精神和身体的健康问题就变得越来越多，干扰我们注意力的集中度，也因此成为我们记忆的小偷。
重点&难点词汇
（上下滑动查看）
重点词汇
Retrieve memories 读取记忆
Brain shrinkage 大脑萎缩
Be meaningful to 对......有意义
Deeply engaged 完全投入；完全投入
难点词汇
Falter 衰弱；衰退
Synapsis n.（神经元轴突的）[解剖]突触；（染色体的）结合
Hippocampus n.海马体
Neuron n. [解剖]神经元，神经单位，神经细胞
Neurotransmitter n. [生理]神经递质；[生理]神经传递素
Acetylcholine n.乙酰胆碱
Encode v.（将文字材料）译成密码；编码；编制成计算机语言
【备战2021年12月四六级考试】
屠皓民团队实力carry，助你过级~
↓ 扫描二维码 ↓
立即报名
基础+强化+真题精讲+考前冲刺点拨
单词带背，规划到周；
作文带练，导师精批；
全程督学+答疑，
签约服务，考不过免费重读
精华四六级备考礼包，
只给你有用的
往期精选
编辑：Ovaltine, 阁主
点个在看你最好看