首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、They are expensive to make. B、They are extremely accurate. C、They were first made in space. D、They were invented in the 1970s.
A、They are expensive to make. B、They are extremely accurate. C、They were first made in space. D、They were invented in the 1970s.
admin
2022-08-13
102
问题
Some people wonder why countries spend millions of dollars on space projects.
They want to know how space research helps people on Earth.
Actually, space technology helps people on Earth every day. This is called "spin-off technology". Spin-off technology is space technology that is now used on Earth.
In early space programs, such as the Apollo missions of the 1960s and 1970s, and in the space shuttle missions today, scientists developed objects for the astronauts to use on the moon and in space.
We now use some of these objects every day.
For example, we have quartz crystal clocks and watches accurate to within one minute a year.
We purify the water we drink with the water filter designed for the astronauts’ use in space. The cordless, hand-held tools we use in our homes, such as vacuum cleaners, flashlights, drills and saws came from the technology of these early space programs. On cold winter days, we can stay warm with battery-operated gloves and socks, and specially-made coats and jackets. All these clothes are similar to the spacesuit designs that kept astronauts comfortable in the temperatures of the moon, and are spin-offs from space technology. These products are only a few examples of the many ways space technology helps us in our everyday lives. No one knows how new spin-off technology from the International Space Station will help us in the future.
16. What do some people want to know about space exploration?
17. What did scientists do for the space shuttle missions?
18. What does the speaker say about quartz crystal clocks and watches?
选项
A、They are expensive to make.
B、They are extremely accurate.
C、They were first made in space.
D、They were invented in the 1970s.
答案
B
解析
细节辨认题。短文提到,我们现在使用的石英钟和石英表的精确度达到了一年误差不超过一分钟。
转载请注明原文地址:https://kaotiyun.com/show/vHjJ777K
0
大学英语四级
相关试题推荐
河北省某施工企业的一名生产工人受公司委派到北京停工学习1个月,其学习期间的工资属于()。
用于保证承包人能够按合同规定进行施工,偿还发包人已支付的全部预付金额的工程担保是()。
一本好的社会科学著作,不仅应该做到于无声处听惊雷,在琐屑的生活细节中_____,而且应该让读者在阅读的过程中,情不自禁地借助作者的方法去检验生活和理解社会。填入画横线部分最恰当的一项是()。
听莫扎特的音乐能够提高智商,这被称作“莫扎特效应”。无论“莫扎特效应”有无这样的神奇功效,音乐在陶冶情操、抚慰心灵上的作用正在逐步显现出来。人类离不开音乐也是显而易见的事实。通过这段话,可以知道的是()。
一位青年去拜访画家:“为什么我画一幅画,只用一天功夫,可卖掉它却要整整一年?”“请你倒过来试试。你花一年功夫画一幅画,兴许一天就能卖掉。”画家说。青年照办:观察,写生,构思,创作。后来事实果然如此。这个故事说明的道理是()。
Wheredoesthewomanmostlikelywork?
CharacteristicsofAmericanCultureI.PunctualityA.Goingtothetheaterbe【T1】______twentyminutesprior
Huntingforajobcanbestressful,butthere’snoreasontohurtyourchancesbymaking【T1】_______:Whenyou’reapplyingfora
A、Theywillcooperatewiththepolice.B、Theyhadcheckedtheplanecarefully.C、Theywillbequestionedbythepolice.D、Theyt
A、Talkbig.B、Talkatlength.C、Gossipalot.D、Forgetherself.B细节推断题。对话中女士说有时候她不想打电话,她只想问对方一个问题,因此发短信较为便捷简单,如果给他们打电话,她会不得不说好长时
随机试题
章某与电力公司解除劳动合同纠纷一案,经过A市甲区人民法院审理后,判决解除章某与电力公司之间的劳动合同关系。章某不服上诉至A市中级人民法院,提出该案未经过劳动争议仲裁,甲区人民法院不应当受理此案。A市中级人民法院经查属实。A市中级人民法院下列哪一处理是正确的
"Hightech"and"stateoftheart"aretwoexpressionsthatdescribethemodemtechnology.Hightechisjustashorterwayofsa
甲乙是相处很好的同事,乙在困难时甲借给他5000元钱,借期1年,因双方是好朋友,当时没有打欠条,也没有别人知道这件事。1年后,乙没有还钱,甲起诉到法院。关于本案的叙述,正确的有()。
进行构件的强度、刚度、稳定性计算和分析时,对变形固体的基本假设。假设固体因外力作用而引起的变形与原始尺寸相比是微小的,在固体分析、建立平衡方程、计算个体的变形时,都以原始的尺寸进行计算,此假设为()。
吊箱围堰封底厚度应根据抽水时吊箱不上浮的原则计算确定。封底厚度不宜小于()。
根据中国人民保险公司的海洋运输货物的保险条款的规定,货物在运输过程中由于自然灾害和运输工具发生意外事故造成被保险货物的实际全损或推定全损,由于运输工具遭遇搁浅、触礁、沉没、互撞等情况造成保险货物的全部或部分损失,是属于()的保险范围。
教师资格证书的适用的地域范围是()。
Aftertakinghisdogforawalkonedayintheearly1940s,GeorgedeMestral,aSwissinventor,becamecuriousabouttheseeds
Thestrongstormdidalotofdamagetothecoastalvillages:severalfishingboatsweredamagedandmanyhousescollapsed。
Weatherchangeswhenthetemperatureandtheamountofwaterintheatmospherechange.Wecanseeandfeelwatercomingfromthe
最新回复
(
0
)