关闭图标
log图标

toefl.viplgw.cn

  • 使用手机注册
  • 使用邮箱注册
  • 手机号不能为空!

    验证码不能为空!

    用户名不能为空!

    密码不能为空!

  • 邮箱不能为空!

    验证码不能为空!

    用户名不能为空!

    密码不能为空!

已有账号? 登录到雷哥托福
关闭图标
log图标
  • 使用手机找回密码
  • 使用邮箱找回密码
  • 手机号不能为空!

    验证码不能为空!

    密码不能为空!

  • 邮箱不能为空!

    验证码不能为空!

    密码不能为空!

又想起来了
加入生词本

listen

英['lɪs(ə)n] 美['lɪsn]
vi. 听,倾听;听从,听信
n. 听,倾听

已添加
×

我要举报草莓小菇凉评论

用户头像
草莓小菇凉:说的非常好,十分有道理,棒棒棒!

06-08 15:44:55

请选择举报类型:

举报电话:400 1816 180    举报QQ:2095453331
×
logo图标
分享到雷哥托福

分享成功图标分享成功

邀请名师点评成功,管理员正在安排老师进行点评。

继续做题 返回首页
支付雷豆失败图标 雷豆余额不足 购买雷豆 返回
报告题目错误
请选择错误类型:
请描述一下这个错误:

取消

文章结构

Official 08-L3 .Vision Correction 点击收藏

标准

  • 高音
  • 静音
  • 句子
    精听
  • 全文
    精听
  • 听写
    模式
  • 点击查看本句

    听写本句 再播一遍 下一句
  • 点击查看全文

    再播一遍本文

    Listen to part of a lecture in a history class.

    So we've been talking about the printing press.

    How it changed people's lives, making books more accessible to everyone.

    More books meant more reading, right?

    But, as you know, not everyone has perfect vision.

    This increasing literacy, um, in reading, led to an increasing demand for eye glasses.

    And here's something you probably haven't thought of.

    This increased demand impacted the societal attitudes toward eye glasses.

    But, first let me back up a bit and talk about vision correction before the printing press.

    And, um, what did people with poor vision do, I mean, especially those few people who were actually literate?

    What did they do before glasses were invented?

    Well, they had different ways of dealing with not seeing well.

    If you think about it, poor vision wasn't their only problem, I mean, um, think about the conditions they lived in: houses were dark, sometimes there weren't any windows; candles were the only source of light.

    So in some places, um, like ancient Greece for example, the wealthiest people with poor vision could have someone else read to them - easy solution if you could afford it.

    Another solution was something called a "reading stone".

    Around 1000 C.E. European monks would take a piece of clear rock, often quartz, and place it on top of the reading material.

    The clear rock magnified the letters, making them appear larger, um, looks like what happens when a drop of water falls on something, whatever's below the drop of water appears larger, right?

    Well, the "reading stone" works in a similar way.

    But rocks like quartz, well, quartz of optical quality weren't cheap.

    Late in the 13th century, glass maker in Italy came up with a less expensive alternative.

    They made reading stones out of clear glass.

    And these clear glass reading stones evolved into the eye glasses we know today.

    So we're pretty sure that glasses were invented in about the late 1200's, well, over a hundred years before the printing press.

    But it's not clear who exactly invented them first or exactly what year.

    But record shows that they were invented in both Europe and China at about the same time.

    By the way, we call this "independent discovery".

    Independent discovery means when something is invented in different parts of the world at the same time and it's not as unusual as it sounds.

    You can look at the timeline charts at the back of your textbook to see when things were invented in different cultures at about the same time to see what I'm talking about.

    So now let's tie this to what I've said before about societal attitude towards glasses.

    Initially in parts of Europe and in China, glasses were a symbol of wisdom and intelligence.

    This is evident in the artwork from the period.

    European paintings often portrayed doctors or judges wearing glasses.

    In China, glasses were very expensive, so in addition to intelligence, they also symbolize affluence, um, wealth.

    In 14th century Chinese portraits, the bigger the glasses, the smarter and wealthier the subject was.

    So glasses were a status symbol in some parts of the world.

    Now let's go back to the invention of the painting press in 1440.

    What happened? Suddenly, books became readily available and more people wanted to read.

    So the need, oh well, actually not only the need but the demand for more affordable glasses rose drastically.

    Eventually, inexpensive glasses were produced, and then glasses were available to everyone.

    People could purchase them easily from a traveling peddler.

    • special
    ☞查看答案 再播一遍