首页
登录
职称英语
[originaltext] Human beings have used tools for a very long time. In some part
[originaltext] Human beings have used tools for a very long time. In some part
游客
2024-01-21
41
管理
问题
Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than two million years ago. (23) They made these tools by hitting one stone against another. In this way, they broke off pieces from one of the stones. These chips of stone were usually sharp on one side. People used them for cutting meat and skin from dead animals, and also for making other tools out of wood. Tools helped people to get food more easily. Working with tools also helped to develop human intelligence. The human brain grew bigger, and human beings began to invent more and more tools and machines. (24) The stone chip was one of the first tools that people used. Some scientists say that it is the key to success of mankind. Since 1960, a new kind of tool has appeared. That is, the silicon chip—a little chip of silicon crystal. It is smaller than a fingernail, but it can store more than a million "bits" of information. It is an electronic brain. Every year these chips get cleverer, but their size gets smaller, and their cost gets less. They are used in watches, calculators and intelligent machines that we can use in many ways. In the future we will not need to work with tools in the old way. Human beings used stone chips for more than two million years, but human life changed very little in that time. We have used silicon chips for only a few years, (25)but life is changing faster every day.
23. How did early human beings make tools two million years ago?
24. Why is the stone chip thought to be an important tool?
25. What is the future like according to the speaker?
选项
A、It is one of the first tools.
B、It develops human capabilities.
C、It leads to the invention of machines.
D、It is crucial to the development of mankind.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3380936.html
相关试题推荐
[originaltext]Thefirstprivatemissionoutsideofearthorbitisclosertha
[originaltext](3)Fastfood,asitturnsout,isn’tquiteasfastasitused
[originaltext]KellySwisher,anArkansaswoman,escapedinjuryandmanagedt
[originaltext]Thefirstprivatemissionoutsideofearthorbitisclosertha
[originaltext](3)Fastfood,asitturnsout,isn’tquiteasfastasitused
[originaltext](3)Fastfood,asitturnsout,isn’tquiteasfastasitused
[originaltext]KellySwisher,anArkansaswoman,escapedinjuryandmanagedt
[originaltext]Theworld’slargestaircrafthastakentotheskiesforthefi
[originaltext]Theworld’slargestaircrafthastakentotheskiesforthefi
[originaltext]Theworld’slargestaircrafthastakentotheskiesforthefi
随机试题
Imagineaworldinwhichtherewassuddenlynoemotion—aworldinwhichhuma
[originaltext]M:ThevolcanicashfromtheeruptionofMountSaintHelenscerta
“人心不同,各如其面”,这句俗语体现了人格的( )A.稳定性 B.独特性
质量控制资料核查记录归档保存的单位是()单位。A.施工 B.监理 C.建设
口碑∶票房∶电影A.质量∶价格∶商品 B.公平∶正义∶律师 C.好评∶差评∶
一般资料:女性,30岁,银行出纳员,未婚 临床表现:求助者三个月前,由于粗心,
(2018年真题)患者,女,28岁,因“多汗、心慌、消瘦、易怒半月余”就诊,实验
与牙周炎发生关系密切的菌斑是A.龈上菌斑 B.光滑面菌斑 C.面菌斑 D.
从管制的角度,随着电信业的发展和竞争,互联互通在费用方面强调基于()进行结算。A
下列人员中,应当遵守注册会计师所在会计师事务所的质量管理政策和程序的是( )。A
最新回复
(
0
)