首页
登录
职称英语
A summary of the physical and chemical nature of life must begin,not on the E
A summary of the physical and chemical nature of life must begin,not on the E
游客
2023-12-16
5
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
which is to be found the source of the energy that the Sun constantly pours 【M1】______
out into space light and heat. This energy is librated at the center of 【M2】______
the Sun as billions upon billions of nuclei of hydrogen atoms collide
with each other and fuse together to form nuclei of helium, and doing 【M3】______
so, relieve some of the energy that is stored in the nuclei of atoms. 【M4】______
The output of light and heat of the Sun requires that some 600 million
tons of hydrogen are converted into helium in the Sun every second. 【M5】______
This the Sun has been doing for several thousands of millions of year.
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 gamma radiation 【M6】______
is absorbed by atoms inside the Sun to be reemitted at slight longer 【M7】______
wavelengths. This radiation, in its mm is absorbed and reemitte& As the
energy filters through the layers of the solar interior, it passes through
the X-ray part of the spectrum eventually becoming light. At this stage,
it has reached that we call the solar surface, and can escape into space 【M8】______
without being absorbed further by solar atoms. A very small fraction of
the Sun’s light and heat are emitted in such directions that after 【M9】______
passing unhindering through interplanetary space, it hits the Earth. 【M10】______ [br] 【M5】
选项
答案
are改成be
解析
句法错误,虚拟语气问题。主句的谓语动词是require,后面的宾语从句中使用should+v.表示虚拟语气。
转载请注明原文地址:https://tihaiku.com/zcyy/3277742.html
相关试题推荐
Itseemsthatphysicalactivitiesinevitably______,whichimprovesfitness.[or
WhichofthefollowingisphysicallythelargestnationintheUnitedKingdom?A、
WhichofthefollowingisNOTwrittenbyEdgarAllaPoe?A、Nature.B、ToHelen.C、
Anyphysicaltheoryisalwaysprovisional,inthesensethatitisonlyahyp
Anyphysicaltheoryisalwaysprovisional,inthesensethatitisonlyahyp
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
随机试题
标准养护是指混凝土试块在温度()、相对湿度()以上的环境中的养护。A.20±
可以对股权投资基金行业违法违规的市场主体,采取责令改正、监管谈话、出具警示函、公
《中国药典》中地高辛的鉴别试验是A:Keller-Kiliani反应 B:Vi
儿童思维已摆脱具体事物的束缚,把形式和内容区分开来的阶段属于( )。
下列对妇女生命健康权造成侵害的有()。A.虐待老年妇女 B.遗弃女婴
简述现代企业人力资源管理各个历史发展阶段的特点。
试卷附图中,性状上具有“白颈”特征的中药材是
2×20年9月20日,甲公司向其子公司乙公司销售一批商品,不含增值税的销售价格为
某公司为获得一项工程合同,拟向工程发包方有关人员支付好处费8万元,公司市场部持公
1.背景 某新建机场地处丘陵山区,地形比较复杂,最大挖方高度大于12m。土基挖
最新回复
(
0
)