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
2024-11-12
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] 【S5】
选项
答案
are—be
解析
虚拟语气错误。本句谓语是requires,后接that引导的从句,谓语应该使用should+动词原形,should可以省略。
转载请注明原文地址:https://tihaiku.com/zcyy/3842611.html
相关试题推荐
Itisaknownfactthatphysicalactivityimprovesoverallhealth.Notonly
Itisaknownfactthatphysicalactivityimprovesoverallhealth.Notonly
Itisaknownfactthatphysicalactivityimprovesoverallhealth.Notonly
Itisaknownfactthatphysicalactivityimprovesoverallhealth.Notonly
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
Asummaryofthephysicalandchemicalnatureoflifemustbegin,notonth
随机试题
YouwillheararadiointerviewwithabusinessmancalledBrettPorter,whodeve
Largeanimalsthatliveinthedeserthaveevolvedanumberofadaptationsf
排烟风机出口处的总管上设置的280℃排烟防火阀,在关闭后应直接联动控制风机停止,
某股票即时揭示的卖出申报价格和交易数量分别为:15.60元、1000股,15.5
狗—鼠()A.马—牛 B.猫—虎 C.狼—狗 D.鹅—鸭
1997年11月14日颁布的()是我国首次颁布的规范证券投资基金运作的行政法规
在公司信贷中的合法合规原则下,商业银行要坚持()的原则。 A.盈利B.
下列选项中,不属于金融风险管理中市场风险的评估方法的是()。A.概率法
甲公司为增值税一般纳税人,主要从事洗衣机的生产和销售业务。2019年9月有
渗出性结核性胸膜炎属于() A.变质性炎症 B.浆液性炎症 C.纤维素性炎
最新回复
(
0
)