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
69
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.
【C7】
选项
A、release
B、relieve
C、recover
D、resume
答案
A
解析
动词辨义题。该段一直在说明氢原子核是如何通过聚变成氦,从而释放出能量的。故此处应选择 release“释放”。全句意为:通过这种方式,原子核中的能量被释放出来。relieve意为“减轻,救济,解除”; recover意为“恢复。复原”;resume意为“(中断后)继续,恢复”。词形相近单词的词义辨析。
转载请注明原文地址:https://kaotiyun.com/show/VdN7777K
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
随机试题
膀胱三角
男性,30岁,骑自行车摔倒,右侧胸部摔倒马路沿上,引起局部疼痛及憋气。查体:P84次/分,BP110/80mmHg,患侧胸部有压痛,呼吸音稍弱,胸片示:右侧第4、5肋骨骨折,无移位,患侧肺压缩约30%,治疗可选择.
胸骨左缘第2~4肋间闻及Ⅲ~Ⅳ级全收缩期杂音,肺动脉瓣第二心音亢进胸骨左缘第2肋间闻及粗糙的连续性机器样杂音,并向颈、背部传导
癫痫持续状态的定义是
免疫球蛋白降低见于
患者,男性,78岁。面色苍白、食欲不振半年余。查体:皮肤黏膜苍白,舌乳头萎缩,呈“牛肉样舌”。血红蛋白80g/L,白细胞3.2×109/L,血小板66×109/L,网织红细胞3.4%,平均红细胞体积(MCV)124fl,白细胞分类正常。首先考虑诊断为
实施无痛肌内注射的措施,下列哪项不妥()。
建设项目负债筹资的来源主要有()。
A、Becausesheusedtheman’sscreen.B、Becausesheusedthewallinstead.C、Becauseshewouldbuyacheaperonelater.D、Because
Forthispart,youareallowed30minutestowriteanessayentitledVoiceYourOpinionbycommentingonthesaying,"Silenceis
最新回复
(
0
)