首页
登录
职称英语
A summary of the physical and chemical nature of life must begin, not on th
A summary of the physical and chemical nature of life must begin, not on th
游客
2023-12-01
25
管理
问题
A summary of the physical and chemical nature of life must
begin, not on the Earth, but in the Sun; in fact, at the Sun’s very
center. It is here where is to be found the source of the energy that【S1】______
the Sun constantly pours out into the space as light and heat. This【S2】______
energy is liberated at the center of the Sun as billions on billions of【S3】______
nuclei of hydrogen atoms collide with each other and fuse together to
form nuclei of helium, and, in doing so, releases some of the energy【S4】______
that is stored in the nuclei of atoms. The output of light and heat of
the Sun requires that some 600 million tons of hydrogen are【S5】______
converted into helium in the Sun every second. This the Sun has
been done for several thousands of millions of year.【S6】______
The nuclear energy is released at the Sun’s center as high-
energy gamma radiation, a form of electromagnetic radiation like
light and radio waves, only of very much short wavelength. This【S7】______
gamma radiation is absorbed by atoms inside the Sun, to be
reemitted at slight longer wavelengths. This radiation, in its turn, is【S8】______
absorbed and remitted. As the energy filters through the layers of
the solar interior, it passes through the x-ray part of the spectrum,
and eventually becoming light. At this stage, it has reached that we【S9】______
call the solar surface, and can escape into space, without being
absorbed further by solar atoms. A very small fraction of the Sun’s
light and heat emitted in such directions that, after passing【S10】______
unhindered through interplanetary space, it hits the Earth. [br] 【S3】
选项
答案
on—upon
解析
介词误用。一般情况下on和upon可以互换,但在一些约定俗成的固定结构中不可以互换,billions upon billions是固定搭配,表示“数十亿计的”,类似的还有thousands upon thousands,millionsupon millions。
转载请注明原文地址:https://tihaiku.com/zcyy/3234314.html
相关试题推荐
PASSAGEONEThethemeisthathumanbeingsareimprisonedbynature.
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrom
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrom
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrom
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrom
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrom
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrom
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrom
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
随机试题
Questions15-17ChoosetheappropriatelettersA-Dandwritetheminboxes15-17
Thewaypeopleclingtothebeliefthatafull-filled,pain-freelifeequal
WhichofthefollowingsentencesisgrammaticallyINCORRECT?A、Noteacherandno
[originaltext]M:Doyouknowthethingthat’salwaysstruckmeasoddaboutopi
[originaltext]Allwritersdreamofsuccess.Yetsomewritersturntheirbackon
[originaltext]MayandJunearethemonthswhenmostAmericancollegesandu
Complainingaboutfaultygoodsorbadserviceisnevereasy.Firstofall,c
目前我国收取印花税的交易品种是()。A.权证 B.股票 C.债券 D.
施工方应视施工项目的特点和施工进度控制的需要,编制()等进度计划。A、施工总进度
佳禾公司与和达公司发生合同争议,起诉到某县人民法院。甲、乙、丙三法官组成会议庭承
最新回复
(
0
)