试题查看

首页 > 公共英语考试 > 试题查看
【单选题】

Long long ago mankind began to use tools. Throughout the world, you can still find the tools which were used over two million years ago. People made such tools by hitting one stone (36) another.By this means, they got pieces from one of the stones. These pieces of stone were always (37) on one side. People utilized them to (38) skin and meat from some animals that were dead, (39) to make other tools from wooD、Mankind needed (40) use tools since, unlike other meat-eating (41) , say lions, they did not have sharp teeth. Tools greatly helped people obtain food more (42) .

Tools helped (43) human intelligence as well when human worked with them. The human brain became bigger gradually, and human beings began to invent a growing number of tools. The stone piece was one of the (44) tools that were used by people, and maybe it was (45) . Some scientists hold it was the key (46) human beings’ success.
A、new kind of tool has come into people’s view since 1960, that is, the silicon chip a small chip of silicon crystal. It is a bit (47) than a fingernail, but it is able to (48) several million "bits" of information or so. No doubt that it is an (49) brain.
Each year these chips grow cleverer, however (50) size becomes smaller, what’s more, their cost gets (51) .
It is (52) over two million years that human beings used chips, but human (53) changed so little at that time. Now we have made use of silicon chips for merely (54) years, but our life is changing faster with each passing day.
(55) will human life be like in two decades
A、them B、they C、theirs D、their
查看答案解析

参考答案:

正在加载...

答案解析

正在加载...

如答案有误或试题有侵权,请联系我们。[提交反馈][在线客服]

根据网考网移动考试中心的统计,该试题:

6%的考友选择了A选项

14%的考友选择了B选项

2%的考友选择了C选项

78%的考友选择了D选项

你可能感兴趣的试题

Longlongagomankindbegantousetools.ThrougLonglongagomankindbegantousetools.ThrougLonglongagomankindbegantousetools.ThrougLonglongagomankindbegantousetools.ThrougLonglongagomankindbegantousetools.ThrougIfyouleaveandarriveatacertainplaceatdiff
版权所有网考网(netkao.com)All Rights Reserved

警告:系统检测到您的账号存在安全风险

抱歉,您的账号因涉嫌违反网考网购买须知被冻结。您可在“网考网” 微信公众号中的“官网服务”- "账号解封申请”申请解封。

微信扫描关注网考网