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
One night in the early 1600s Galileo got tired of using the newfangled (新花样的) telescope to spot ships and pointed it to the heav
One night in the early 1600s Galileo got tired of using the newfangled (新花样的) telescope to spot ships and pointed it to the heav
admin
2023-02-19
36
问题
One night in the early 1600s Galileo got tired of using the newfangled (新花样的) telescope to spot ships and pointed it to the heavens instead. Suddenly the moon had mountains. A fleet of moons encircled Jupiter. And people would never again gaze at the night sky in the same way.
Now astronomers looked 8,000 light-years into the cosmos with the Hubble Space Telescope. Orbiting 370 miles up, above city lights and the rippling atmosphere, Hubble has confirmed the existence of black holes, revealed a gallery of bizarre galaxies, and chronicled the catastrophic (灾难的) explosions of dying stars.
Not bad for a satellite that in the beginning had something of a catastrophic reputation itself, Hubble was lifted into orbit with great expectation by the space shuttle Discovery in April 1990. Almost immediately it was clear that the primary mirror was misshapen (变形的)—
not to the extreme but enough to pull some lace curtains across Hubble’s "window on the universe
." The telescope’s true golden age began in December 1993, when the crew of the shuttle Endeavor rode to the rescue.
With hinged doors and modular (组合式的) parts, Hubble was designed to be serviced in space. Like roadside mechanics, the astronauts pulled up to Hubble, opened the hood, and installed replacement parts. They included corrective mirrors that canceled out the existing mirror flaw. In the following months astronomers marveled at razor-sharp views of a universe dizzy with exploding stars and colliding galaxies, stretching off from here to the edge of eternity.
When you look into space, you are looking back through time. Even at 186,000 miles a second, light requires a measurable amount of time to get from one place to another. Sunlight bounced off the moon requires a second to reach earth, so when you look at the moon, you are actually looking at the moon a second ago. With its unobstructed view, Hubble can look back some 11 billion years—just two billion years or so after the creation of the universe—to see galaxies already forming. These galaxies are speeding away from us. The farther they are, the faster they’re going—the most distant approach the speed of light. In the 1920s astronomer Edwin Hubble came up with a formula that expresses the proportional relationship of distances between clusters of galaxies and the speeds at which they are moving.
For the rest of us Hubble is simply the greatest tour guide ever. The Eagle Nebula’s towering pillars evoke the same awe as any ancient temple. The violence of Eta Carinae’s explosion is as heart-stopping as the eruption of a volcano. And thanks to Hubble we can begin to register the notion that while earth is our local address, we have an entire universe that we can call home.
According to.the fifth paragraph, through Hubble, we can see ________.
选项
A、the moon at a shorter time than with our naked eye
B、the creation of the universe more than 13 billion years ago
C、galaxies which began to form about 11 billion years ago
D、remote galaxies approaching us almost at the speed of light
答案
B
解析
根据题干要求定位到第5段。第5段第4句中的主句表明我们现在所看到的星系在110亿年前就已开始形成了,由此可见选项B为本题答案。第5段开头描述了我们看到月球需要多长时间,但没有说明用望远镜需时多少。事实上,用肉跟和用望远镜看同样距离的物体用时是一样的,选项A不符合常理;第6段第4句表明我们只能看到110亿年前,言下之意,130亿年前宇宙的形成是看不见的,因此选项C不正确;选项D与第5段第5、6句相反,原文中的approach并不是表明星系在靠近我们,而是表明它们远离我们的速度接近光速。
转载请注明原文地址:https://kaotiyun.com/show/JAvD777K
0
大学英语六级
相关试题推荐
NowadayswecanseenumerousforeignfilmsandTVprograms________inandmanyotherimportedproductsdominatingourmarkets.
PASSAGETHREEWhatdoesthestatement"CentralAsianswereearlymidwivesinthebirthofcivilization"meaninPara.4?
PASSAGETHREE(1)VaststretchesofcentralAsiafeeleerilyuninhabited.Flyat30,000feetoverthesouthernpartoftheform
PASSAGETHREE(1)VaststretchesofcentralAsiafeeleerilyuninhabited.Flyat30,000feetoverthesouthernpartoftheform
UsingaLibrary1.BorrowingbooksConsultthecataloguetocheckthebookis【T1】________Cardsplacedinalphabetic
TheeditorofMerriam-Websterpointedoutthattherearemanyreasonstolookupawordinthedictionary________thanlearningi
Thankyou,Mr.Black.It’sagreathonortobeappointedasOverseasSalesManager.Tobehonest,thispromotioncameasquitea
Wearealldisappointedthatmanyabrightidea________putintoactionsofar.
A、Motivated.B、Disappointed.C、Perplexed.D、Shocked.D题目问说话者开始上高中时的感受。录音开头提到,当说话者刚上高中时,这对他来说是令人震惊的(itwasashock),D项为原词。其他三项均与s
随机试题
(2019年泰安)《中华人民共和国义务教育法》规定,适龄儿童、少年因身体状况需要延迟入学或者休学的,其父母或其他法定监护人应当提出申请,由当地()批准。
二尖瓣术后再狭窄的病例,应行球囊扩张术和闭式二尖瓣交界分离术。()
引起痛风代谢障碍的物质是
A.氯化物检查B.硫酸盐检查C.葡萄糖中的重金属检查D.磺胺嘧啶中的重金属检查E.铁盐检查硫化钠试液用于
图示乙类防空地下室外墙顶部的最小防护距离ts是:
在价值工程活动中,描述某一个产品零部件“价值是多少?”,属于()的工作内容。
下列账户中,属于盘存账户的有()。
某企业2011年3月份的“材料成本差异明细账”如下表所示(计算保留两位小数):该企业3月份结存材料差异率为()。
我国现存最古老、最高的一座木构大塔是()。
经典性条件反射
最新回复
(
0
)