阅读理解。 Recently a really strange thing ha

题型:阅读理解

问题:

阅读理解。
     Recently a really strange thing happened at Wuhan Liangdaojie Middle School in Hubei. Over 600
Junior 1 and 2 students at the school took part in a "caring for an egg like a baby" activity. They were
asked to keep an egg close at hand for a month without breaking it.
     "It's hard for parents to bring up their children but many students take their parents' love for granted.
(把…当作理所当然)," said Liu Kang, the school's director. "We wanted them to learn that lesson by
taking care of an egg as a baby."
     Li Mingxuan is one of the students. His egg didn't break during the month, but he felt exhausted. "You
had to put so much attention to it," said the 13-year-old boy, "I now understand how much my parents
have done for me. I'll prepare them a glass of milk to help them sleep better every night."
     Not everyone was as lucky as Li. More than 450 of the 600 students broke their eggs.
     Yan Yueming broke his egg in just five days, which made him very frustrated. He said, "I can't imagine
how sad my parents would be if there was something wrong with me, their 'egg'!" I want to return their
love and I'll help them with chores every day." promised the 13-year-old boy.
1. Li Mingxuan felt very ______ during this month.
[ ]
A. frustrated
B. sad
C. exhausted
D. happy
2. ______ were broken in the month during this activity.
[ ]
A. No eggs
B. All the eggs
C. 600 eggs
D. More than 450 eggs
3. According to this article, we know after this activity Yan Yueming will ______.
[ ]
A. help his parents with chores every day
B. prepare his parents a glass of milk to help them sleep better
C. not break the eggs any more
D. be glad to help others
4. The aim of this activity is to ______.
[ ]
A. teach the students to be more careful
B. teach the students the eggs are fragile (易碎的)
C. teach the students to understand their parents
D. teach the students to love their teachers
5. What can we infer (推断) from the article?
[ ]
A. The students always argue with parents at home.
B. The students don't study hard at school.
C. The students don't like this activity.
D. The students learn to love their parents through this activity.
g
考点:故事类阅读
题型:阅读理解
计算(
5
-
3
)(
5
+
3
)-(
2
+
6
)2
的结果为(  )
A.-7B.-7-2
3
C.-7-
43
D.-6-4
3
题型:阅读理解

  宇宙学中,暗能量是某些人的猜想,指一种充溢空间的、具有负压强的能量。如今,这个猜想是解释宇宙加速膨胀和宇宙中失落物质等问题的一个最流行的方案。

  暗能量是一种不可见的、能推动宇宙运动的能量,宇宙 中所有的恒星和行星的运动皆是由暗能量来推动的。之所以暗能量具有如此大的力量,是因为它在宇宙的结构中约占73%,占绝对统治地位。

  宇宙的运动都是旋涡型的,所以暗能量总是以一种旋涡运动的形式出现。暗能量和暗物质的唯一共同点是它们既不发光也不吸收光。从微观上讲,它们的组成是完全不同的。更重要的是,像普通的物质一样,暗物质是引力自吸引的,而且与普通物质成团并形成星系。而暗能量是引力自相斥的,并且在宇宙中几乎均匀的分布。所以,在统计星系的能量时会遗漏暗能量。因此,暗能量可以解释观测到的物质密度和由暴涨理论预言的临界密度之间70-80%的差异。

  暗能量同时也改变了我们对暗物质在宇宙中所起作用的认识。按照爱因斯坦的广义相对论,在一个仅含有物质的宇宙中,物质密度决定了宇宙的几何,以及宇宙的过去和未来。加上暗能量的话,情况就完全不同了。首先,总能量密度(物质能量密度与暗能量密度之和)决定着宇宙的几何特性。其次,宇宙已经从物质占主导的时期过渡到了暗能量占主导的时期。大约在“大爆炸”之后的几十亿年中暗物质占了总能量密度的主导地位,但是这已成为了过去。现在我们宇宙的未来将由暗能量的特性所决定,它目前正使宇宙加速膨胀,而且除非暗能量会随时间衰减或者改变状态,否则这种加速膨胀态势将持续下去。

  不过,我们忽略了极为重要的一点,那就是正是暗物质促成了宇宙结构的形成,如果没有暗物质就不会形成星系、恒星和行星,也就更谈不上今天的人类了。宇宙尽管在极大的尺度上表现出均匀和各向同性,但是在小一些的尺度上则存在着恒星、星系、星系团、巨洞以及星系长城。而在大尺度上能够促使物质运动的力就只有引力了。但是均匀分布的物质不会产生引力,因此今天所有的宇宙结构必然源自于宇宙极早期物质分布的微小涨落,而这些涨落会在宇宙微波背景辐射(CMB)中留下痕迹。然而普通物质不可能通过其自身的涨落形成实质上的结构而又不在宇宙微波背景辐射中留下痕迹,因为那时普通物质还没有从辐射中脱耦出来。另一方面,不与辐射耦合的暗物质,其微小的涨落在普通物质脱耦之前就放大了许多倍。在普通物质脱耦之后,已经成团的暗物质就开始吸引普通物质,进而形成了我们现在观测到的结构。

1.根据文意,下列关于“暗能量”的表述,不正确的是[ ]

A.“暗能量”的出现改变了人们对宇宙的认识。

B.“暗能量”的存在已经被实际观测到,它总是以一种旋涡运动的形式出现。

C.“暗能量”在宇宙结构中占据统治地位,几乎均匀地分布在宇宙中。

D.“暗能量”正在主导宇宙,它的特性决定了宇宙的未来。

2.下列说法不符合原文意思的是 [ ]

A.“暗能量”主导宇宙结构之前,宇宙的总能量密度是由“暗物质”主导的。

B.“暗物质”是引力自吸引的,普通物质也具有这种特点。

C.“暗能量”在宇宙结构中占统治地位,它也是促成宇宙结构形成的重要因素。

D.“暗物质”通过吸引普通物质,形成了今天所观测到的宇宙结构。

3.根据原文提供的信息,下列推断不正确的是 [ ]

A.因为统计星系的能量时会遗漏暗能量,所以观测到的物质密度和暴涨理论预言的临界密度之间存在

70-80%的差异。

B.“暗能量”在宇宙中是均匀分布的,它具有负压强且不产生引力。

C.以往人们认为是“暗物质”决定宇宙的几何特性,“暗能量”改变了人们的这种认识。

D.“暗能量”占据宇宙结构的统治地位,它吸引着宇宙中的普通物质一起作旋涡型运动。

题型:阅读理解

预后最差的肝性脑病患者是()

A.诱因明确,且易消除者

B.暴发性肝炎所致者

C.肝硬化伴腹水者

D.肝硬化伴黄疸者

E.肝硬化伴自发性腹膜炎者

题型:阅读理解

常用于炮制苍术的辅料是()

A.河砂

B.滑石粉

C.灶心土

D.稻米

E.麦麸

题型:阅读理解

国务院颁布的某部行政法规设定了甲项行政区域许可,该行政许可由国务院某部乙负责实施。则下列关于行政许可设定和实施的说法错误的是:()

A.国务院应当定期对甲进行评价

B.国务院某部乙对甲的实施情况和存在必要性应做出适时评价

C.公民对于甲行政许可的设定和实施有意见的,有权向国务院或乙提出

D.五年后,国务院认为甲能够通过市场机制解决,仍可以保持不变

更多题库