首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
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
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
admin
2018-05-25
21
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.
【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://kaotiyun.com/show/7YoK777K
0
专业英语八级
相关试题推荐
A、Thetrendofrentingahouseforvacation.B、Theadvantagesoflivinginahotel.C、Theaccommodationconditionduringatrip.
HowtoApproachaDissertationI.WhatisadissertationA.Apieceofwritingwithargument:—analyzetheevidencetosupport
SubfieldsofLinguisticsTheoverlappinginterestsbetweenthefieldoflinguisticsandotherdisciplinescreateseveral【T1】
HowtoBuildYourVocabularyEffectivelyVocabularyisthefoundationoflearningalanguage.Withoutit,noneoftheskills
HowtoBuildYourVocabularyEffectivelyVocabularyisthefoundationoflearningalanguage.Withoutit,noneoftheskills
HowtoBuildYourVocabularyEffectivelyVocabularyisthefoundationoflearningalanguage.Withoutit,noneoftheskills
A、Itisaperiodwhenachildismostvulnerabletomentalandphysicaldamage.B、Itisaperiodwhenachildismostcloselyat
HowtoSucceedinYourLiteratureClassCollegeliteratureclassmayseemdifficulttobeginners,especiallywiththeirlan
BritishEducationalSystemI.PrimaryandsecondaryeducationinBritain1)Childrengotoprimaryschoolattheageof【T1】____
SexisminEnglishSexisminEnglishlanguagereflectsthetraditionalethicsthatmenare【T1】______towomen.Here,fourasp
随机试题
市场细分的方法有_______。
A.肥大B.增生C.再生D.化生老年人的硬脑膜出现了骨组织
男性,26岁,外伤致肱骨中下1/3骨折,来院检查时发现有垂腕征,垂指畸形。该患者选择哪种治疗方法痛苦小,稳妥
根据《中华人民共和国会计法》的规定,各单位要依法设置的会计账簿包括()。
由于承包人的原因造成工程设备不能按原定目标使用而需要再次检查,发包人有权要求承包人相应延长缺陷责任期,但缺陷责任期最长不得超过()年。
0,()
计算机模拟是属于哪一类计算机应用领域?()
资质审批部门应当自受理企业申请之日起()个工作日内,对符合相应资质等级条件的企业核发资质证书。
消费品
RIPv1与RIPv2说法错误的是()。
最新回复
(
0
)