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
专升本
All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit d
All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit d
admin
2018-04-17
32
问题
All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we do not know about the way the universe is put together. But we do know exactly what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it.
Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard. All of the switches(转辙器) are set before the train arrives, so that its path is completely determined. Some switches we can see, others we cannot. There is no ambiguity if we can see the setting of a switch: we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The unseen switches are the true decision points in the future, and what happens when we arrive at them determines the entire subsequent course of events.
When we think about the future of the universe, we can see our "track" many billions of years into the future, but after that there are decision points to be dealt with and possible fates to consider. The goal of science is to reduce the ambiguity at the decision points and find the true road that will be followed.
According to the passage, it is difficult to be certain about the distant future of the universe because we______.
选项
A、have too many conflicting theories
B、do not have enough funding to continue our research
C、are not sure how the universe is put together
D、have focused our investigations on the moon and planets
答案
C
解析
文章第一段There are still too many things we do not know about the way the universe is put together.所以选C。
转载请注明原文地址:https://kaotiyun.com/show/oOiC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Pickouttheappropriateexpressionsfromtheeightchoicesbelowandcompletethefollowingdialogsbyblackeningthecorrespon
Whenallthepeoplehadassembled,theking,surroundedbyhiscourt,【C1】______asignal.Thenadoorbeneathhimopened,andt
Themeetingwillbeginat9:00accordingtothe______.
Forthousandsofyears,manhasenjoyedthetasteofapples.Apples,whichareabout85percentofwater,growalmosteverywhere
Animalshavedifferentwaysofprotectingthemselvesagainstwintertimeweather.Someanimalsgrowheavycoatsoffurorfeather
Animalshavedifferentwaysofprotectingthemselvesagainstwintertimeweather.Someanimalsgrowheavycoatsoffurorfeather
TheCaliforniacondoristhelargestbirdinNorthAmerica.Itisanendangeredspecies.20yearsagotherewerelessthan30bi
Longtimeago,theancientpeoplecouldnottraveltoanyfarawayplacesfortheyhadnoinstrumentstocarrythemacrossthewi
Longtimeago,theancientpeoplecouldnottraveltoanyfarawayplacesfortheyhadnoinstrumentstocarrythemacrossthewi
随机试题
以下关于游戏治疗的说法,正确的是()
管理者的行为是否符合道德受哪些因素的影响?()
Thecomputerworksveryfast,______dataatthespeedoflight.
胎儿附属物不包括
“十三五”时期是全面建成小康社会的决胜阶段,必须贯彻落实()发展理念。
“十一五”规划的指导原则强调要坚持社会主义市场经济的改革方向,完善现代企业制度和现代产权制度,建立反映市场供求状况和()程度的价格形成机制。
某城市排水南干线工程,管道为DNl200~DNl500的混凝土管,覆土深3.6~4.0m,总长1636m;施工范围为路边绿地,土质条件较好,无须降低地下水。施工方案除下穿现况道路段采用人工顶管施工外,全部采用开槽敷设管道。施工过程发生如下事件:事件一、
Cusie工业公司2010年的运营业绩如下:销售额为15300美元,销售产品成本为10900美元,折旧费用为2100美元,利息费用为520美元,股利支付为500美元。在年初,净固定资产为11800美元,流动资产为3400美元,流动负债为1900
Theuseofmoneyisnotlimitedtohighcivilizations;actuallymanyprimitivepeopleshave______moneysoftheirown.
A、TonightB、Intwohours.C、Tomorrow.D、Inafewminutes.C对话中,女士提到数学作业明天就要交了(theassignment’sduetomorrow),其中的due指“到期,到预定的时间”,
最新回复
(
0
)