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、Square. B、Triangular. C、Circular. D、Random. D讲座后面提到伽利略认为太阳黑子的形状经过太阳表面时会发生变化,可能某个特殊的太阳黑子是方的,然后变得更加不规则,再然后就变成另外一个样子了,因此D项“无规则的”为
A、Square. B、Triangular. C、Circular. D、Random. D讲座后面提到伽利略认为太阳黑子的形状经过太阳表面时会发生变化,可能某个特殊的太阳黑子是方的,然后变得更加不规则,再然后就变成另外一个样子了,因此D项“无规则的”为
admin
2023-02-19
54
问题
We are going to start a study of sunspots today, and I think you’ll find it rather interesting. Now I’m going to assume that you know that sunspots, in the most basic terms, are dark spots on the Sun’s surface. That will do for now. The ancient Chinese were the first to record observations of sunspots as early as the year 165. When later European astronomers wrote about sunspots, they didn’t believe that the spots were actually on the Sim. That’s because of their belief at the time that the heavenly bodies, the Sun, Moon, Stars, and Planets, were perfect, without any flaws or blemishes. So the opinion was the spots were actually something else, like shadows of planets crossing the Sun’s face. And this was the thinking of European astronomers until the introduction of the telescope, which brings us to our old friend, Galileo. In the early 1600s, based on his observations of sunspots, Galileo proposed a new hypothesis. He pointed out that the shape of sunspots, well, the sunspots weren’t circular. If they were shadows of the planets, they would be circular, right? So that was a problem for the prevailing view. And he also noticed that the shape of the sunspots changed as they seemed to move across the Sun’s surface. Maybe a particular sunspot was sort of square, then later it would become more uneven, then later something else. So there is another problem with the shadow hypothesis, because the shape of a planet doesn’t change.
What Galileo proposed was that sunspots were indeed a feature of the Sun, but he didn’t know what kind of feature. He proposed that they might be clouds in the atmosphere, the solar atmosphere, especially because they seemed to change shape and there was no predicting the changes, at least nothing Galileo could figure out. That random shape changing would be consistent with the spots being clouds. Over the next couple hundred years, a lot of hypotheses were tossed around. The spots were mountains or holes in the solar atmosphere through which the dark surface of the Sun could be seen. Then in 1843, an astronomer named Heinrich Schwa Trobe made an interesting claim. He had been watching the Sun every day that it was visible for 17 years, looking for evidence of a new planet. And he started keeping tracks of sunspots, mapping them, so he wouldn’t confuse them, so he wouldn’t confuse them with any potential new planet. In the end, there was no planet but there was evidence that the number of sunspots increased and decreased in a pattern, a pattern that began repeating after 10 years, and that was a huge breakthrough.
22. Why didn’t European astronomers believe that there are sunspots?
23. What is Galileo’s new hypothesis?
24. According to Galileo’s view, what was the shape of sun spots?
25. What is Heinrich Schwa’s finding?
选项
A、Square.
B、Triangular.
C、Circular.
D、Random.
答案
D
解析
讲座后面提到伽利略认为太阳黑子的形状经过太阳表面时会发生变化,可能某个特殊的太阳黑子是方的,然后变得更加不规则,再然后就变成另外一个样子了,因此D项“无规则的”为正确答案。因为黑子是随机变化的。所以有时会变成A项,但不是固定是方的,有时候变得不规则。伽利略认为黑子不是圆形的,故C项不选;B项“三角形”在录音中没有提及,不选。
转载请注明原文地址:https://kaotiyun.com/show/W8vD777K
0
大学英语六级
相关试题推荐
Whendochildrenstartschoolintheman’scountry?
Theprofessor’shabitualairof________wasmisleadingfront,concealingamazingreservesofpatienceandadeepcommitmenttohi
Inaquaticenvironments,theherbicideatrazineismorelikelyto(i)________developingamphibianswhenitishighlydilutedtha
这世上有些东西,最好别看透,留几分神秘,留一点朦胧,留一丝悬念,可能会更有意思些。魔术,如果让观众看透了手法,知道了诀窍,这门艺术也就寿终正寝了:变脸,正因为迄今为止大伙都没有看透其技术真相,才能屡演屡新,大受欢迎,成为国粹。交朋友,各有目的:或
今年上市的草果品种格外地多,我独爱皮儿青青、似乎尚未熟透的那种。周末和女友逛水果店,她挑最红最大的买,生怕春色不够似的;我则逗留在顶边上的柜台,那儿不起眼地堆着我-一个冬天未见的青苹果。相争不下,索性各按自己的偏好买了一网兜,都很不服气的样子,暗笑对方不会
Asheappliedsunscreentohisyoungdaughter’sface,DaraO’Rourke,professorofenvironmentalandlabourpolicyattheUniver
Man-madebeautyisanewtermthatappearedinrecentyears.Manypeople,mostlyyounggirls,beautifythemselvesthroughvariou
A、Thepayisnotgoodenough.B、Therewillbetoomuchwork.C、Somethingunfairmayhappen.D、Thereishardlyanypromotion.C
A、Toachieveastateofdeeprelaxationispossiblethroughvariousmeans.B、Sittinginanarmchaircanreflectone’scharacter.
Languageisnotmerelysomethingthatisspreadoutinspace,asitwas——aseriesofreflectionsinindividualmindsofoneand
随机试题
下列业务中,属于保荐机构应当承担的保荐业务有()。 Ⅰ.推荐发行Ⅱ.尽职调查 Ⅲ.推荐上市Ⅳ.持续督导
管理者应怎样进行非正式团体的管理与引导?
妊娠时维持黄体功能的主要激素是()
会计职业道德的产生、发展和完善受到多种因素的影响和制约,具体影响因素有()。
下列事项中,一般会引起资产和负债同时增加的有()。
培训需求分析是现代企业有效的培训系统的子系统之一。其基本功能除了明确培训对象外,还包括()。
根据我国《宪法》的规定,下列关于私有财产权的表述错误的是()。
下列广义积分发散的是().
Nearlytwo-thirdsofbusinessesintheUKwantto【C1】______staffwithforeignlanguageskills.Frenchisstillthemosthighlyp
Sandwich,Massachusetts,isaninterestingplacetovisit.EveryknowntypeofglasswarewasmadeinSandwich—blown,blownmolde
最新回复
(
0
)