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【C1】______at the Sun’s ver
A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in【C1】______at the Sun’s ver
admin
2010-07-24
47
问题
A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in【C1】______at the Sun’s very center. It is here that is to be found the【C2】______of the energy that the Sun pours out into space is【C3】______The energy takes the form of light and heat. This energy is【C4】______at the center of the Sun as billions【C5】______billions of nuclei of hydrogen atoms【C6】______with each other and fuse together to form nuclei of helium, and in doing so,【C7】______some of the energy that is【C8】______in the nuclei of atoms. The【C9】______of light and heat of the Sun【C10】______that some 600 million tons of hydrogen be【C11】______into helium(氦)in the Sun every second. This the Sun has been doing for several thousands of millions of years. The nuclear energy is released at the Sun’s center as high-energy gamma radiation,【C12】______of electromagnetic radiation like light and radio waves, only of very much shorter【C13】______. This gamma radiation is absorbed by atoms inside the Sun to be【C14】______at slightly longer wavelengths. This radiation, in its【C15】______is absorbed and reemitted. As the energy filters through the【C16】______of the solar interior, it passes through the X-ray part of the spectrum【C17】______becoming light. At this stage, it has reached what we call the solar surface, and can escape into space without being absorbed further by solar atoms. A very small【C18】______of the Sun’s light and heat is emitted in such directions that【C19】______passing unhindered through interplanetary space, it【C20】______the Earth.
【C17】
选项
A、lately
B、originally
C、initiatively
D、eventually
答案
D
解析
副词辨义题。该处是说,经过上文所列的一些列过程后,“能量最终经过光谱中X射线部分,变成了光”。故选择eventually“终于,最后”。lately意为“最近,不久前”;originally意为“本来,原来,最初”; initiatively意为“主动地”,均不符合原文意思,可排除。
转载请注明原文地址:https://kaotiyun.com/show/PdN7777K
0
大学英语四级
相关试题推荐
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
随机试题
长期进行有氧运动练习,可以使心脏出现()。
一截肢患者需安装大腿假肢。步态评定时出现侧倾步态,可能原因为
患者,男,35岁,面色黄而晦黯如烟熏,神疲畏寒,食少纳呆,脘闷,大便不实,口淡不渴,舌淡苔腻,脉濡缓或沉迟,治宜
在买卖合同中,买受人的主要义务包括()。
收款凭证属于记账凭证,转账凭证属于原始凭证。()
一般情况下,久期越大,债券的价格波动性就越大。()
下列各项中,不属于投资中心特征的是()。
选择教学方法的主要依据是什么?
偏见:偏见包含两个成分:信念和态度。偏见的信念即关于一个类型中所有人、物或环境的简单化的或未加证实的概括。态度部分是由对于偏见对象的评价性判断构成。综合而言,偏见是以刻板印象的方式对人、物或环境作出的判断。根据以上的定义,下面哪种行为没有偏见发生?
窗体上有一个名称为CD1的通用对话框控件和由四个命令按钮组成的控件数组Command1,其下标从左到右分别为0、1、2、3,窗体外观如图所示。命令按钮的事件过程如下:PrivateSubCommand1_Click(IndexAsIntege
最新回复
(
0
)