首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
下面的短文有15处空白,请根据短文内容为每处空白确定1 个最佳选项。 What Is the Coolest Gas in the Universe?...
下面的短文有15处空白,请根据短文内容为每处空白确定1 个最佳选项。 What Is the Coolest Gas in the Universe?...
admin
2020-12-24
15
问题
下面的短文有15处空白,请根据短文内容为每处空白确定1 个最佳选项。
What Is the Coolest Gas in the Universe?
What is the coldest air temperature ever recorded on Earth? Where was this low temperature recorded? The coldest recorded temperature on Earth was - 91℃ ,which____________ (1) in Antarctica (南极洲)in 1983.
We encounter an interesting situation when we discuss temperatures in ____________(2). Temperatures in Earth orbit(轨道)actually range from about +120℃ to -120℃. The temperature depends upon____________ (3) you are in direct sunlight or in shade. Obviously, -120℃ is colder than our body can____________ (4) endure.
The space temperatures just discussed affect only our area of the solar____________(5). Obviously, it is hotter closer to the Sun and colder as we travel____________ (6)from the Sun. Scientists estimate temperatures at Pluto are about -210℃ . How cold is the lowest estimated temperature in the entire universe? Again, it depends upon your ____________ (7). We are taught it is supposedly _____________ (8) to have a temperature below absolute zero, which is -273℃, at which atoms do not move. Two scientists, Cornell and Wieman, have successfully____________ (9) down a gas to a temperature barely above absolute zero. They won a Nobel Prize in Physics in 2001 for their work — not a discovery, in this case.
Why is the two scientists’ work so important to science?
In the 1920s, Satyendra Nath Bose was studying an interesting____________ (10)about special light particles (微粒) we now call photons (光子). Bose had trouble ____________ (11) other scientists to believe his theory, so he contacted Albert Einstein. Einstein’s calculations helped him theorize that atoms___________ (12) behave as Bose thought — but only at very cold temperatures.
Scientists have also discovered that ultra-cold (超冷)atoms can help them make the world’s atomic clocks even ____________ (13) accurate. These clocks are so accurate today they would only lose one second____________ (14) six million years! Such accuracy will help us travel in space because distance is velocity (速度)times time (d=vt). With the long distances involved in space____________(15), we need to know time as accurately as possible to get accurate distance.
(12)
选项
A will
B would
C must
D need
答案
B
解析
根据上下文判断可以排除选项C和D。will可用来表示“在一定的情况下通常会……”,又因为本句主句的时态为一般过去式,所以从句中的助动词使用过去式would。本题答案为B。
转载请注明原文地址:https://ti.zuoweng.com/ti/oLsQKKKQ
相关试题推荐
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 ADoctorintheHou...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 ADoctorintheHou...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 TheToughGrassth...
随机试题
在股权自由现金流折现模型中,股权自由现金流(FC、FE)除了需考虑净利润、折旧、
10、()是在电气设备上工作保证安全的组织措施之一。 A.交接班制度
下列各项中不属于社区要素的是()。
A.声呐利用次声波探测鱼群 B.汽车导航仪利用电磁波导航 C.验钞机利用荧光物质在红外线照射下能够发光的原理工作 D.夜视仪通过识别不同温度的物体辐A.声
下列属于元认知计划策略的是() A.产生待回答的问题B.阅读时对注意加以跟踪 C.浏览阅读材料D.设置学习目标 E.分析如何完成学习任务
评价社会卫生状况的主要指标是( )A.平均预期寿命B.平均死亡年龄C.平均死亡率D.年龄组死亡率E.以上均不对
健康相关生命质量的研究对象包括( ) A.患者 B.健康者 C.医护人员 D.A和B E.上述A、B、C三项
桩冠根管预备中下列不正确的操作是A.先看牙片B.确定桩长度C.用圆钻去除根充物D.用裂钻去除根填充物和修整根管壁一次完成E.钻进时随时校正钻入方向
.向厂家订货的设备在制造过程中如需对设备的设计提出修改,应由原设计单位进行设计变更,并由()审核设计变更文件和处理相关事宜。A.原设计负责人B.建设单位代表
老梁,残疾军人,退休安置在某地军队离休退休干部休养所。根据《军队离休退休干部服务管理办法》,下列服务保障工作中,不属于该休养所提供的是( )。A.按时发放退休