2. 职称考试
  3. 共用题干 What is the Coolest Gas in the Universe?What is the coldest air tempera...

共用题干 What is the Coolest Gas in the Universe?What is the coldest air tempera...

admin2020-12-24  7
问题 共用题干
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_____ (51) in Antarctica（南极洲）
in 1983.
We encounter an interesting situation when we discuss temperatures in_________(52).Temperatures
in Earth orbit（轨道）actually range from about +120℃ to －120℃. The temperature depends upon
______(53)you are in direct sunlight or in shade.Obviously，－120℃ is colder than our body can
________ (54)endure.
The space temperatures just discussed affect only our area of the solar________(55).Obviously,it
is hotter closer to the Sun and colder as we travel__________(56)from the Sun,Scientigtg egtimate tern-
peratures at Pluto are about －210℃．How cold is the lowest estimated temperature in the entire universe?
Again,it depends upon your_________(57).We are taught it is supposedly__________(58)to have a
temperature below absolute zero,which is－273℃，at which atoms do not move.Two scientists,Cornell
and Wieman,have successfully______(59)down a gas to a temperature barely above absolute zero.
They won a Nobel Prize in Physics in 2001 for their work一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_______(60)about special light par-
tidles（微粒）we now call photons（光子）.Bose had trouble __________(61)other scientists to believe his
theory,so he contacted Albert Einstein. Einstein’s calculations helped him theorize that atoms_______(62)
behave as Bose thought一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__________(63)accurate.These clocks are so accurate today they would oniy lose one second
_________ (64)six million years!Such accuracy will help us travel in space because digtanee is velocity
（速度）times time( d=vt).With the long distances involved in space _______(65),we need to know
time as accurately as possibie to get accurate distance.
选项 _________(60)
A:invention
B:experiment
C:theory
D:paper
答案C
解析最低温度这种现象只能发生（occur)，而不能是其他的行为；而且which在此句中作指 物的主语时，其谓语只能用不及物动词。
由第三段的第一句话可知，此处填“space”与其对应。
由后面的or可知选whether , whether...or…是固定搭配，意为“是······还是······“。
身体只能为是否“安全地”承受，而不是“悲伤地’，、“重复地”、“自由地”承受。
solar system是专有名词，意为“太阳系”。
travel away是“远离”的意思，由句子中的比较关系可知，此处是指远离太阳。
由前面的离太阳近，温度高，反之亦然，可知此处指你所处的位置不同，温度高低也不同。
按常识来讲，在－273℃原子能动是不可能的。
cool down是固定短语，意为“冷却”。
由本段中第二句的“his theory”可知此处应填与之对应的“t1tneory” 。
Bose只能是“使别人信服”他的理论，而不能“迫使”、“请求”、“命令”。
would在此表示推测，意为“大概，会”。
even more修饰accurate，表示更加精确。
every＋时间段，表示“每······时间”。此外表示“每6百万年”。
只有旅行（travel）才能与距离相关，所以此处的"space travel”指太空旅行。
转载请注明原文地址:https://ti.zuoweng.com/ti/wRsQKKKQ
相关试题推荐
随机试题