满分5 > 高中英语试题 >

Scientists have found a potentially habi...

    Scientists have found a potentially habitable(可居住的)planet and its star outside our Solar System are more similar to the Earth and our Sun than any other known planet-star pair. For now, the planet candidate(候选)is known as KOI-456.04. If its existence is confirmed by other telescopes, the planet would join a group of about 4,000 known planets outside our Solar System.

“It's the combination of its size less — than — double that of the Earth and its solar-type host star that makes it so special and familiar” Ren6 Heller, the lead author of the new study, said in a press release. That means it could potentially host life.

To be considered habitable, planets must orbit a stable star that keeps a temperature suitable for liquid water. The vast majority of identified Earth-like planets don't meet the conditions required for life to exist. They give off either too weak light or high-energy flames that can fry the planets around them. The star that KOI-456.04 orbits is about 1.1 times the size of the Sun, with a surface temperature of only 300 degrees Celsius less than the Sun. The star also sends out visible light, like our Sun does. Plus, KOI-456.04 is less — than — double the size of the Earth, which could mean its atmospheric conditions are similar to ours. If KOI-456.04 s atmosphere is like the Earths — meaning it has a mild greenhouse effect, then its average surface temperature would be about 5 degrees Celsius, compared to the Earth's average of 15 degrees Celsius, according to the Max Planck Institute .

The system is just over 3,000 light-years away from our Solar System. Future space telescopes could study the planet candidate further. NASA, the European Space Agency, and the Canadian Space Agency plan to launch(发射)the James Webb space telescope in 2021. The European Space Agency's PLATO space telescope, scheduled to launch in 2026, will focus on finding Earth-like planets orbiting Sun-like stars.

1.What makes the newly-found planet special?

A.Its strange name. B.Its extremely large size.

C.Its potential to host life. D.Its relationship with the Sun.

2.What does the underlined word “orbit” mean in paragraph 3?

A.Move around. B.Stick to.

C.Knock into. D.Depend on.

3.Which of the following do the scientists care while studying KOI-456.04?

A.What kind of energy its host star provides.

B.Whether its atmosphere is similar to the Earth's.

C.How many agencies are willing to join in the study.

D.Why its surface temperature is lower than the Earth's.

 

1.C 2.A 3.B 【解析】 这是一篇说明文。文章介绍了科学家发现了一颗类似地球的行星KOI-456.04,并对其进行了一些研究。 1. 细节理解题。根据文章第一段Scientists have found a potentially habitable(可居住的)planet and its star outside our Solar System are more similar to the Earth and our Sun than any other known planet-star pair.可知,科学家发现,一个潜在可居住的行星及其在我们太阳系之外的恒星比其他任何已知的行星恒星都更类似于地球和太阳。由此可知,这个新发现的行星特别之处在于,它有可能有生命存在。故选C。 2. 词义猜测题。根据划线单词所在句To be considered habitable, planets must orbit a stable star that keeps a temperature suitable for liquid water.可知,要想被认为适合居住,行星必须围绕一颗稳定的恒星运行,并保持适宜液态水的温度。结合常识我们知道,行星一般是围绕着恒星转动的,由此可知,此处划线单词 “orbit”的意思是“围绕……运动”。故选A。 3. 推理判断题。根据倒数第二段If KOI-456.04 s atmosphere is like the Earths — meaning it has a mild greenhouse effect, then its average surface temperature would be about 5 degrees Celsius, compared to the Earth's average of 15 degrees Celsius, according to the Max Planck Institute .可知,根据Max Planck研究所,如果KOI-456.04的大气层像地球一样——这意味着它有轻微的温室效应,那么它的平均表面温度将是5摄氏度左右,而地球的平均温度是15摄氏度。由此可推知,科学家在研究KOI-456.04时,更在乎的是KOI-456.04的大气是否和地球的类似。故选B。
复制答案
考点分析:
相关试题推荐

    Growing up in an Italian-American household was, for me, pretty special. My mother, Gina, an immigrant from Calabria, held on to so many of her family's traditions that at times, regardless of the fact that I was living in the United States, our home felt like part of Italy.

To this day, my mother only speaks to me in Italian, and our conversations are, for the most part, in her mother tongue. And most of those conversations are about food. For us, food — Italian food — is an important part of our lives.

My mom Gina grew up on a farm where the fruits of their labor directly turned into the food on the table, and wasting any of it was unacceptable. Every day was “Thanksgiving” because times were tough, so food — and how it found its way onto the table ——was a holy matter. One of the greatest lessons my mother taught me in the kitchen is to cook what you have on hand, and to never let anything go to waste.

So, when I take a perfect little arancini(意大利饭团)out of the hot oil. I am immediately transported back to my childhood: I am a little girl getting off the bus and running through the back door to the smell of the food. This small snack symbolizes so many important tenements(经济公寓)in my life about my heritage(传承)through food.

Heritage food is Sunday dinner with the family. When we preserve and recreate dishes like that, we feel a sense of pride and also a sense of continuity. Heritage food is the love we receive from our parents and grandparents, and it's the love we in turn give to our children and grandchildren. Heritage food is food that makes you feel safe and protected wherever and whenever you eat it.

Eating arancini, and all the other recipes my mother continues to make here in the U.S. after leaving Italy, allow her to teach me who I am, where I come from, and why I should be proud of it all.

1.What can we know about the author's mom?

A.She is very strict with her children.

B.She refuses to learn to speak English.

C.She thinks her life in the U.S. special.

D.She values her family's traditions a lot.

2.What does the author imply by mentioning “Thanksgiving” in paragraph 3?

A.She enjoyed the food her mother cooked.

B.This holiday was very important for her mother.

C.Her family treasured the food that didn't come easily.

D.The food was delivered to her family on Thanksgiving.

3.What does the author think of heritage food?

A.It is becoming popular among American families.

B.It passes on family love from generation to generation.

C.It offers a sense of safety when one lives in America.

D.It reminds parents to take good care of their children.

 

查看答案

假设你是李华,你的美国朋友Mike对中国学生的暑假很感兴趣,得知你暑假临近,发邮件来询问你相关情况,请你给他写封回信,包括以下要点:

1. 暑假的大致时间;

2. 你的暑假安排(至少两点);

3. 询问美国学生的暑假情况。

注意:1. 词数100字左右;

2. 可以适当增加细节,以使行文连贯;

3. 开头、结尾已给出,不计入总词数。

Dear Mike,

Learning that you are interested in the summer vocation in China, I’m writing to tell you something about it.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua

 

查看答案

下面文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。

删除:把多余的词用斜线(\)划掉。

修正:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1. 每处错误及其修改均仅限一词;

2. 只允许修改10处,多者(从第11处起)不计分。

Nowadays many children show no appreciation for that their parents have done. I really feel disappointing with them. Their parents give birth to us, bring us up or shape us into intelligent ones. So we should be grateful them. One of my parents’ dearest wishes are that I can be excellent in my study. So I made the most of my precious time to study hard. When at the home, I always do as many housework as possible. Dear friend, don’t wait to be loved.

 

查看答案

    Before my birth, my parents had very little knowledge about or exposure to blind people.

Like many parents, mine went from doctor to doctor trying to have my ________ restored (恢复). Finally, a doctor told my parents, “________ going up doctors. Take her home and treat her just like the rest of your children.” For a second they ________ putting me down on the seat and leaving me there. Then, my mother remembered a blind man she had known. He had led a very ________ life. He was married, had children and ________ a job. She decided if that was possible for him, then it would be possible for me.

When I went to new places and heard noises I had ________ heard before, I was ________ because I couldn’t associate the ________ with anything I recognized. My mother kept exposing me to the things I was afraid of, explaining them and making me ________ as much as possible. ________, my father was ________ me where things were in our house. He said I could not be ________ them and I must learn my way around.

When graduating from college, I was encouraged to ________ higher education. I ________ to do this because I wanted to get a job in social work. I thought in the back of my ________ that I could compete in something ________ work with the blind. Later, I heard about a job opening in the Minnesota Services for the Blind, ________ for it, and was hired.

I realize that I was ________ to have the parents I had, who taught me early in life that they had high ________ for me and that I could live a normal and ________ life.

1.A.sight B.hearing C.illness D.problem

2.A.Allow B.Quit C.Forget D.Keep

3.A.imagined B.expected C.considered D.regretted

4.A.wonderful B.formal C.normal D.special

5.A.held B.lost C.offered D.made

6.A.usually B.ever C.frequently D.never

7.A.curious B.frightened C.excited D.stressed

8.A.sound B.environment C.surrounding D.darkness

9.A.taste B.see C.smell D.touch

10.A.Therefore B.However C.Meanwhile D.Though

11.A.teaching B.showing C.explaining D.bringing

12.A.working on B.looking into C.breaking in D.running into

13.A.seek B.share C.learn D.try

14.A.refused B.reviewed C.risked D.accepted

15.A.memories B.parents C.mind D.soul

16.A.but for B.other than C.rather than D.except for

17.A.begging B.interviewed C.searched D.applied

18.A.confused B.proud C.fortunate D.discouraged

19.A.blessings B.expectations C.praises D.promises

20.A.perfect B.terrible C.unlucky D.meaningful

 

查看答案

    To reduce the spread of the pandemic (流行病), Corona Virus, our product manager has announced businesses to start working from home. For those who are working from home, dealing with this situation can be challenging. 1..

Create a work area. Your first challenge is to pick a corner in the home and create a work-space that is perfect for work from home. 2.. You can make a large coffee table as a work desk. Keep the desk neat and tidy.

3.. Get your laptop, cell phone diary in the right place. If you are in a noisy home, search for your noise cancellation headphone. Use your mouse for increased productivity. Find out who will take care of children as the schools are closed. Organize the home.

Learn technologies. It is important to learn technology for smoother communication. You can make use of Google Hangouts, Slack or other video tools for messaging. 4..

Ensure proper lighting is there. 5.. Locating the office where you receive natural lighting is the best way to increase productivity. Ensure you have enough artificial lighting arrangements.

A.Be organized

B.Create a private area

C.Here’s how you can master it

D.Certain apps can help you to organize the day

E.Find out the right furniture and ensure it is comfortable

F.These tools can help you to communicate with your co workers effectively

G.It is important to choose that corner of the home where there is proper lighting

 

查看答案
试题属性

Copyright @ 2008-2019 满分5 学习网 ManFen5.COM. All Rights Reserved.