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
2022-09-04
124
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/OXjJ777K
0
大学英语四级
相关试题推荐
Thespecialdealofferedbyoursupplierwilllastonlyfora________time.
Thearticleontheimportanceoforganizationsuggeststhatpeoplewhohavea________structureddailyschedulewillaccomplish
—WhoseadvicedoyouthinkIshouldtake?—________.
音乐节目《蒙面唱将猜猜猜》的乐视视频总播放量达到7.5亿,领跑周日档综艺。在节目导演看来,一旦做足了“视觉”方面的隐藏,会发现,除了那些音色特别有辨识度的歌手,其实没有那么好猜。很多成名的歌手想借助“蒙面”展示他们不为大众所熟悉的潜能。那些音色有辨识度的歌
Whatarethespeakerstalkingabout?
Whatarethespeakersmainlydiscussing?
PASSAGETWOIn"...thehealthcaresystemwillhavetoovercomepatients’distrustofAI(Para.2)",whatdoes"distrust"r
PASSAGETWO(1)Mostpeoplehaveexperiencedthefeeling,afterataxingmentalwork-out,thattheycannotbebotheredto
A、Fromtheservicecenter.B、Fromanadvertisement.C、Fromaguidebook.D、Fromthecompany’swebsite.D细节推断题。对话中,女士询问男士如何获得家政服务的
A、Theyshouldhavebigfinancialsupport.B、Theymustsatisfyphysicalandeducationalrequirements.C、Theyshouldpaythetuiti
随机试题
根据以下资料,回答问题。截至2019年3月31日,证券业协会对证券公司2019年第一季度经营数据进行了统计。131家证券公司当期实现营业收入1018.94亿元,同比增长54.47%。其中,各主营业务收入分别为代理买卖证券业务净收入(含席位租赁)221.4
试述第一次郑州会议至庐山会议前夕毛泽东纠正“左”倾错误的初步努力。
A.紫雪丹B.至宝丹C.安宫牛黄丸D.牛黄清心丸凉开方剂长于芳香开窍的是
A、中枢性高热B、尿崩症C、胃出血D、癫痫发作E、顽固性呃逆皮层运动区及其附近手术()。
肌内注射时,选用联线法进行体表定位,其注射区域正确的是
被代理人的主要权利有()。
关于贷款重组的方式,下列说法正确的有()。
颞横回是()。
如果能够做好南极生态环境的承受力评估,并严格执行有关规定,南极旅游造成的生态影响就可以得到有效控制。因为与南极大陆极为广袤的地域相比,游客活动的地域仅为总面积的3%左右。而如何管理好长期设在南极的科考站,才是更为棘手的问题。尤其是一些被废弃的科考站,已对南
鲁迅是中国著名的文学家,他的著作很多,如《从百草园到三味书屋》《藤野先生》《记念刘和珍君》等,其中最著名的是《阿Q正传》。鲁迅有许多有趣的小故事,其中一个是这样的:有一天,鲁迅穿着一件破旧的衣服去理发店理发。理发师见他穿着很随便,而且看起来很脏,
最新回复
(
0
)