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
Among her fellow astronomers, Vera Rubin is known as an expert observer of the night sky, one of the best. Her reputation derive
Among her fellow astronomers, Vera Rubin is known as an expert observer of the night sky, one of the best. Her reputation derive
admin
2010-05-14
39
问题
Among her fellow astronomers, Vera Rubin is known as an expert
observer of the night sky, one of the best. Her reputation derives from the
project she has doggedly pursued through most of her career: measuring how 【M1】______
fast spiral galaxies are spinning, from their luminous cores out of the faint 【M2】______
wisps of light at their fringes. Such a task may sound tedious; even her
colleagues thought so when she started the project 20 years ago. But for her 【M3】______
painstaking measurements Rubin has’ learned something important about
galaxies: they spin so fast they have to fly apart. Since galaxies do not seem【M4】______
to be shedding stars the way like a rotating lawn sprinkler shed water; 【M5】______
moreover, something must be holding the stars in. That something has to be 【M6】______
gravity, no other force is powerful enough on a galactic scale. And where 【M7】______
there is gravity, there is mass. Rubin realized that a huge reservoir of extra
materials, invisible to her telescope, must be tucked away somewhere in each 【M8】______
galaxy. We cannot see this matte--it is invisible to all our detectors. But
this "dark matter" seems to make up at least 90 percent of the mass of the
universe.
Large because of Rubin’s work, dark matter has become the buzzword in 【M9】______
Astronomy. Her work has stirred such ferment that observers are desperate to 【M10】______
find some way of seeing dark matter and theorists are desperate to find an
explanation of what it is--swarms of unknown elementary particles, for
instance, hidden armadas of Jupiter-like planets.
【M8】
选项
答案
materials—改成material
解析
material作可数名词,表示“材料”之义。作不可数名词,则意为“物质”。根据句意,使用material的单数形式比较合适。
转载请注明原文地址:https://kaotiyun.com/show/QslO777K
0
专业英语八级
相关试题推荐
ThelateAustrianphilosopherLudwigWittgensteinoncesaidthatthemeaningofawordwasderivedfromthewayitisusedinla
A、Itssalesrepresentativeshavebeenmisleadingtheircustomersinthepurchaseofcomputers.B、Itsexpertsarenotawareofth
Expertsestimatethatsomewherebetween【B1】______and【B2】______ofeverythingwecommunicateisnonverbal.Waysofnonverbalcommu
Expertsestimatethatsomewherebetween【B1】______and【B2】______ofeverythingwecommunicateisnonverbal.Waysofnonverbalcommu
Expertsestimatethatsomewherebetween【B1】______and【B2】______ofeverythingwecommunicateisnonverbal.Waysofnonverbalcommu
Expertsestimatethatsomewherebetween【B1】______and【B2】______ofeverythingwecommunicateisnonverbal.Waysofnonverbalcommu
Expertsestimatethatsomewherebetween【B1】______and【B2】______ofeverythingwecommunicateisnonverbal.Waysofnonverbalcommu
Expertsestimatethatsomewherebetween【B1】______and【B2】______ofeverythingwecommunicateisnonverbal.Waysofnonverbalcommu
随机试题
肠梗阻患者非手术治疗措施中最重要的是
能较早提示左心功能失代偿的依据是()。
内部控制机制赖以生存和运作的前提是( )。
索赔是指在合同履行过程中,对于()的过错,而是应由对方承担责任的情况造成的实际损失向对方提出经济补偿或时间补偿的要求。
企业对外投资期间,投资资产的成本准予在计算应纳税所得额时扣除。()
研究性学习作为一种学习方式,渗透于学生的所有学习活动之中。()
关于我国的军衔制度,下列说法正确的是:
战争让无数人失去了生命。据不完全统计,第一次世界大战持续了4年3个月,有33个国家参战,卷入战争人口达15亿以上,军民伤亡3000多万人。第二次世界大战历时6年之久,先后有60多个国家和地区参战,20多亿人卷入战争,死亡7000多万人。而现代战争给人类造成
碑林
一对夫妻带着他们的一个孩子在路上碰到一个朋友。朋友问孩子:“你是男孩还是女孩?”朋友没听清孩子的回答。孩子的父母中某一个说,我孩子回答的是“我是男孩”,另一个接着说:“这孩子撒谎。她是女孩。”这家人中男性从不说谎,而女性从来不连续说两句真话,但也不连续说两
最新回复
(
0
)