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224七年级上册第六单元同步作文:外星人说
全文共 988 字
+ 加入清单茫茫的宇宙空间到底存在不存在“外星人”?对于这个问题,我的回答是肯定的。
因为从生命的起源来看,只要在合适的恒星系统中的一颗条件温和的行星上,产生一定的化学反应即可产生原始的生命。据科学研究推测,这种现象不只是地球上的特有,在整个宇宙空间中绝对会有不少这样的现象。着名天文学家弗兰克·德瑞克早在1961年就提出了一个推断外星生命的方程式,我们通常叫它为“德瑞克方程式”。“德瑞克方程式”现在已经得到全世界很多天文学家的认可。通过“德瑞克方程式”的计算,天文学家们乐观地推断出,仅在银河系中就存在着大量的可能孕育着智能生命的星体。有人甚至明确断言,银河系中就有100万颗左右的行星上可能有生命诞生,而且每颗行星上的生命处于不同的进化阶段。因此,就更不用说离我们更远的其它星系上有智能生命存在的可能了。
之所以到现在为止我们还未能邂逅哪怕一名“外星人”,或确信发现的是“外星人”留下的痕迹,我的观点是——
一种可能是,“外星人类”的文明程度还不足以和我们地球上的人类文明相比。他们没有掌握探索宇宙空间的能力,暂时还“走”不出他们生活的星球。他们就那样原始地生活着,不被我们地球上的人类所知道。当然,他们也绝对不会知道我们地球上的人类。
第二种可能是,“外星人类”的文明程度虽然等同于或者大大超出了我们地球上的人类,但由于“外星”离地球实在太远(必然是这样),因此,“外星人”在探索宇宙空间的时候,肯定也会像我们人类一样,只有在确保“宇航员”生命安全的前提下,才会在航天器上搭载“宇航员”。而航天器飞行的目标越远,航天器在发射时的冲击力对宇航员的振荡越大,也就越对“宇航员”的生命造成威胁。更进一步说,既就是“宇航员”能承受得了航天器发射时的冲击力,作为肉身的“航天员”也不能在宇宙空间生活太久的时间,否则也会对其生命造成严重损害。这样,我们就有理由相信,一定也是肉身(因为生命都是肉身的)的“外星人”,他们不会愚蠢地派遣他们的同类,冒生命危险进行少则几十年几百年多则上千年上万年的穿越宇宙空间到地球作客的死亡游戏。最多,他们会不失时机地向遥远的宇宙空间发射一些无“人”驾驶的航天器,对神秘的宇宙进行他们的探索。在我们地球上空多次出现的神秘飞行物——OFU,谁说其中不会有“外星人”的航天器?
“外星人”是存在的!相信在不久的将来,终会有那么一天,我们会幸遇“外星人”,并揭开他们神秘的面纱。
更多相似作文
篇1:旅行英语七年级词
全文共 697 字
+ 加入清单I love traveling. Traveling not only broadens my horizons but also opens my
eyes to the world. Whats more, it refreshes me. You can go to Disneyland and
experience what its like to be “a child again!” You can visit one of the “seven
wonders of the world,” such as the Grand Canyon and feel the magnificence of
nature! You can taste the “magicial” ice water on a glacier, which can help you
become more beautiful and make you live longer. Just forget all trifles and
burdens that you have in your mind. Experience is a type of living knowledge.
Youll be sure to experience many new things when traveling. You dont even need a
tour guide if you long for more freedom. Just dont forget to bring your
backpack!
篇2:七年级英语
全文共 581 字
+ 加入清单Every child has an idol in their heart. They chase the famous star and
dream to be part of them. Look at those idols, they are young and beautiful, and
the most important thing is that they are favored by a lot of fans, so I dream
to be a star. If I were a star, first, I could make a lot of money. With these
money, I could make my parents have a better life and return their love. The
most exciting thing is to have a lot of fans. They will support me all the time.
I also could see my talents and feel so proud of myself. But being a star means
lacking of time to company our families.
篇3:七年级英语
全文共 606 字
+ 加入清单It is true that no one can goes on well all the time. We will meet some
difficulties now and then. The one who runs away from the test may be a loser
and the one who has the courage to face the challenge may make breakthrough. It
is important to have confidence, and never to be afraid of meeting difficulty.
When it comes, we should not run away. Regardless of the result, we will gain
precious experience and become stronger. My parents stand by my side all the
time, and they give me the confidence to fight. I am so thankful for them. They
give me the confidence, which is the very important thing in my life.
篇4:关于英语作文school七年级
全文共 1236 字
+ 加入清单Good morning, ladies and gentlemen! Its my honor to tell you about the
changes of mySchool.
When you walk around our school, you can see various flowers and trees
everywhere. At the same time, you can smell the taste, breathe fresh air. Its a
nice place for us to study.
Please look at the new building over there. Its our library that was
painted white again this year. It not only looks more beautiful, but also has
increasingly more books than before. Reading different kinds of books can
enhance our horizons and increase our knowledge. I still remember I entered the
school two years ago, the library was old enough and I always couldnt find my
favorite comic books. Therefore, I often complained to my classmates that the
library was out of fashion that we were not able to learn fresh knowledge in
it.
What was even worse, as a member of school basketball team, my partners and
I had few chances to practice, as the playground was too small to play and full
of so many students after school. Luckily, I dont have to worry about that
anymore, because our playground is large enough for all of us to play games, and
basketball court is also bigger. Thats wonderful!
My school has changed a lot, for it is more beautiful and modern. I love my
school.
篇5:关于英语作文school七年级
全文共 759 字
+ 加入清单There are many funny places in ourSchool. For example, the football
playground, the classroom, the experiment room. But my favorite place is
school’s reading-room. Our school’s reading-room is very big and bright. After
class, you can go inside and pick out one of your favorite book to read. There
are so many books that you don’t know which one you should read first.
I love reading. And J.K Rowling is my favorite writer. I have read the
Harry Potter series so many times but I never get bored. In my opinion, reading
books not only broaden my horizon, but also help me to be a better man. I can
learn different things from these books. When I feel blue, I will go to the
school’s reading-room. In that place, I can forget my trouble when I read my
favorite novels.
篇6:关于英语作文school七年级
全文共 431 字
+ 加入清单In the morning, we will gather at the plaza and sing the national anthum.
After taking the pledge, we will go back to class where lessons will soon
began.
After a few periods of classes, it’s recess! Recess is the time when we eat
and play and go toilet. It’s the only time inSchoolwhere all students were
enjoying school life. Too bad it’s only half an hour. After recess, we will go
back to class where chucks of lessons start again.
篇7:关于英语作文school七年级
全文共 621 字
+ 加入清单I am in Xianchi Railway MiddleSchool. There are about 40 teachers and 900
students in my school. Its very large with two small gardens. Some small trees
and flowers are planted. We enjoy beautiful flowers in spring, summer and
autumn. They are the places the students like most. There are two modern
teaching buildings and a teaching building in my school. Our classrooms are
large and bright. We feel so happy to study in such comfortable classrooms.
Besides, the teachers in our school are so excellent that they are popular in
our students. Students build a good relationship with teachers. I am sure you
will like my school.
篇8:关于英语作文school七年级
全文共 620 字
+ 加入清单Today, with the development of economy, more and more children receive high
education. The government has put forward the policy to let children get free
education until they go to college. It is a good trend that more kids have the
chance to improve themselves, because education decides a persons personality
and future career. In the future, theSchoolwill pay more attention to the
students ability and their talents, so more class will be opened to them. They
can choose the class that they are interested in. This will happen since middle
school, and students learn knowledge with less pressure. They can enjoy the
class.
篇9:关于英语作文the spring festival七年级
全文共 1810 字
+ 加入清单When you ask the people around you, what is the most importantFestivalin
China, I guess 99% of the people will say the same answer, theSpringFestival.
There is an old story about Spring Festival. It is said that the monster, named
Nian, will attack people from time to time. In order to drive it away, people
have to light up firecrackers and put some Red paper on the front door and
window at the last day of the Chinese year. Luckily, the monster, Nian, is
afraid of the sound of the firecrackers and the color red; dare not to come any
more. In order to memorialize this day, our ancestors decided that the first
lunar calendar day of the Chinese Year is the Spring Festival.
During the Spring Festival, all the member of the family will get together
on the eve to have a big dinner. Fish, apple, noodle, dumplings, poke, chicken,
candies and so on are indispensable on the table. Fish stands for wealth and
rich of the coming year, apple stands for doing things smoothly, noodle stands
for good health and long live, as to the others, they all symbolize for the
lucky and happiness of the coming year.
Children are the happiest ones during the Spring Festival, not only they
can have lots of companies but also they can have lucky money on the festival.
With the lucky money, they can do whatever they want, such as to set off the
firecrackers, wear new clothes, use their lucky money to buy the things they
want; this is the best part of the Spring Festival, isn’t it?
The Spring Festival is not only means the beginning of the brand-new year,
but also carrying the best wish of the people’s. We are hoping in the New Year
our wish will come true, our life will become better. Anyway, the most
meaningful thing of the Spring Festival is that we spend the time with the
family, the people we love and we know that’s all about.
篇10:关于英语作文the spring festival七年级
全文共 744 字
+ 加入清单There are manyFestivals in China. Among them, I like theSpringFestival
most. Not only because it’s the biggest festival in the year, but also because
it’s a new beginning that brings hope to people and it’s time for family
gathering. Before the festival, people come home no matter where they are.
Usually, we have a big dinner on the New Year’s Eve. And then families sit
together and share their lives or planes. Some will play games or hang out to
have some fun. On the New Year’s Day, people get up early and say good words to
anyone they meet. Children can get lucky money from relatives. In the following
days, we will visit relative’s home and bring New Year’s wishes to them. In
short, it’s a time for family gathering and all of us enjoy it.
篇11:关于英语作文the spring festival七年级
全文共 582 字
+ 加入清单It’s New Year again. In this holiday, sharing is the hottest activity.
People share their lives and discuss hot topic in social lives. Besides, there
are many traditions during theSpringHoliday. For example, in the north, people
will eat dumplings in the New Year’s Day while in the south people will make
Zongzi. Firecrackers and fireworks are essential during the New Year. Now,
people live a much better life than before, so people want to have a lively and
grandFestival. Some are likely to travel while some stay at home and take part
in various activities to enrich their holiday.
篇12:关于英语作文time七年级
全文共 721 字
+ 加入清单When I see the cartoon, I like to watch the cat machine very much, he has a
Timemachine, he always helps his friend to fine something with time machine.
The cartoon makes me think of what would I do if I have a time machine. If I
have a time machine, the first thing I want to do is go back to the time when I
play with my friend, he now moves to another place, I never say goodbye to him,
I want to make it up and say goodbye to him. The second thing is I want to go
back to the time when I shout at my mother, I regret about this all the time, I
wish I had a chance to say sorry at that time. Now I have to face the truth that
I will never have time machine, I should cherish the time and thing I own now,
be nice to my mother.
篇13:关于英语作文time七年级
全文共 696 字
+ 加入清单TheTimeof a date has different standard for boys and girls. Girls always
like to be late for about ten minutes while boys always reach the destination on
time. If the girls are earlier than the boys, then the situation will become
awkward, it is not polite to let a girl wait for a boy. But sometimes girls are
always late for more than half an hour, which annoys the boys. It is said that
if you call a girl to ask her if she is on the way, then she will answer you
that she just goes out of the house, the truth is that she is still in the
house. Most girls are late for making up for a long time. It is considerate to
be late for a date for a few minutes, but it is impolite to be late for much
time.
篇14:关于英语作文time七年级
全文共 542 字
+ 加入清单Since the summer holiday comes, I have a lot of freeTime, as I stay at
home all the time, my mother suggests me to take a part-time job, I am so
willing to accept her idea, because I want to earn money by myself. I find a job
as waiter, I have to work early in the morning, people need to have their
breakfast, I serve them. On the job, I earn little money, but I have worked so
hard, I get to know it is not easy to earn money, so I start to feel grateful
for my parents. Now I won’t waste money, before I pay for the bill, I need to
measure them.
篇15:七年级的英语记录日记
全文共 561 字
+ 加入清单My winter holidays plans me studying for my English , I will make great
efforts to learn English. Persist in listening to half hours of English every
day. I will accomplish the school assignment that the teacher arranges best with
the quickest speed. I can not forget to take the body exercise certainly also ,
I may take the body exercise coming drawing out 30- - 1 hours in time in every
day. I play with the once computer coming certainly may draw out one small Duan
time , watch one meeting TV or. Certainly need only 1 hour. This it is my winter
holidays to plan!
篇16:七年级的英语记录日记
全文共 529 字
+ 加入清单I have rested for a week. I began to feel bored. So I went out with my
friends. They are my best friends in the middle school. We didn’t go to
someplace special. We just saw the other. We had lunch together. While we were
having lunch, we were still talking about the new school and new friends. Yes! A
year later, we have grown riper. And we learned much more things and got new
life. We haven’t enough time to play, to waste and to lose the way. We only have
two years. Two years to go, we will get the real life which belongs to us.
篇17:七年级的英语记录日记
全文共 638 字
+ 加入清单Dreams and Reality
When we talk about dreams, we are so excited, we have many dreams, such as
being a famous person, traveling around the world and so on.
Dreams are what we pursue for a lifetime, with many dreams, we have
motivation to fight for our life. The opposite side of dream is reality, we have
to face reality everyday, reality is what we perceive in our life.
Reality always frustrates us to be successful. We need to balance them.
First, we need to face reality, though it is not ideal, we live in a world, we
have to know exactly who we are. Second, to make our dreams come true, we need
to adjust our dreams according to the reality。
篇18:七年级的英语记录日记
全文共 462 字
+ 加入清单My schoool life is busy and fantastic. First, we have four classes in the
morning and three in the afternoon. We have to get to school before 7:30 because
we have a morning class. Second, I like my school life because teachers and my
classmates are friendly and helpful. We also have lots of after-school activies.
Third, our school environment is very beautiful, the teachers all can make their
lesson interesting and instructive. So I like my school life very much.
篇19:七年级第5单元我爱我家
全文共 745 字
+ 加入清单有人曾问过我:“你的一生中最爱什么呢?”,我回答他说:“我的家。”
我爱我家,爱家人对我的细心照顾,家人之间的浓浓亲情。
当妈妈在晾衣服时看见了对面的树在向她挥手问好,妈妈对我说:“儿子,当心点,外面刮风了,多穿点衣服,别着凉了。”我领着我最好的朋友来家里玩,爸爸对我说:“小心点,他有可能是不良少年。”有一天,我和姥姥去买水果,要过道,我看看两边,没有车,我刚刚想横穿马路,姥姥一声把我叫住对我说:“小心,注意车。”我回头看了看姥姥,姥姥满脸是担心和焦急的表情。这都是家人对我的关心,对我的关怀
我爱我家,爱家的温馨幸福。
有一次,我犯了肛瘘,要手术,当时我一听到这个消息我的心一下提到了嗓子眼,我的脸上充满着恐惧和担心的神情,当天晚上我害怕的睡不着觉,脑海里想的全都是手术的痛苦的表情和场面,爸爸妈妈为了鼓励我,领我去了超市给我买了一辆遥控车,我很高兴,心里得到了一丝安慰,于是就睡着了。第二天上手术台了,护士阿姨语重心长的对我说:“没事,一会就过去了。”可是我还是很害怕,时间到了,打上麻药之后,我感觉到了那手术刀冰凉凉的感觉,我的肉被割开了,由于疼痛难忍,我不由得哭出声来,我感觉越来越痛,整座大楼里充满着我嘶心裂肺的声音,我似乎也听见了爸爸妈妈微微的哭声,手术刀割的越深我的叫声越大,我听见爸爸妈妈的哭声也越大,我的叫声好像要把楼给震塌了。
手术终于结束了,当我被推出手术室时,看见了爸爸妈妈的眼睛周围像熟透了的苹果那样红,妈妈还在不停的抹眼泪,看见了我已经没事了,妈妈得到了一丝安慰,妈妈含着眼泪笑了。
当一个人一无所有的时候,他也可以喊幸福,因为他还有爱他的家人,他还有一个家。 如果一个人没有爱他的家人,失去了属于他自己幸福的家,那他的人生又会是怎样的呢?
祝愿世界上所有的家庭温馨幸福。
篇20:七年级单元作文:我爱我家
全文共 748 字
+ 加入清单我出生在一个普通的家庭中,父母都在很普通的岗位上工作,但就是这么一个普通的家庭,却处处都充满着幸福的旋律。
首先是一家之主——爸爸。爸爸是一名教师,在工作上他勤勤恳恳,同时他也是一个特别恋家的人,每天下班后的“工作”就是回家,爸爸几乎不在外面吃饭。他总是说:外面的鱼肉再好吃,也抵不过妈妈的`手艺,而且吃得放心。
爸爸平时话不多,对事情很执着,只要是他认为对的,若是别人拿不出什么真凭实据,他是不会改变观点的。在学习上,是我的导师、我的智囊,在家务事上是妈妈的好帮手,在游戏方面,爸爸则成了我的敌手。但无论是什么时候,他都是我的好好爸爸。
然后是美丽温柔的妈妈。我敢说妈妈绝对是一个理家好手,不仅对丈夫女儿体贴,而且对老人也是照顾有佳。那次奶奶病了,妈妈几乎每天都要去一趟奶奶家,问长问短的,又是做饭,又是拿来一些脏的衣物回家来洗。做这些事情妈妈从没有过怨言,在她的观点中还保留着旧时代的做妻子的规矩,做一个贤惠的妻子。
我把妈妈称为是家里的大厨,因为不管是什么材料,在她的手中这么变换几下,就会变成一道美味的菜肴。现在,妈妈也讲究菜的营养搭配,什么荤素搭配的,而且妈妈偶尔还会做一些她小的时候吃的菜,真是别有一般滋味。
然后是喜欢安静的我,也有一些贪玩、贪嘴的我。初中生活是很紧张的,但是我有我自己的办法来调整自己,给自己的一个死党打个电话,谈谈心,这是最好的办法。
独生子女都是父母的一个宝,当然我也不例外,自从出生的那时起,我便储蓄了一分不薄的亲情。在海上航行时,亲情是我的指南针;在烈日炎炎的沙漠中,亲情是一片绿荫;而在风平浪静、美丽的港湾中,亲情则是我的海岸。无论走到哪里,他都会陪伴在我的左右。
就是这么一个由爸爸、妈妈、还有我组成的三口之家,没有什么特别的,但却是彼此都相爱的幸福家庭。我爱我家!