中考最后20天英语作文怎么补救(中考最后10天英语30分提到80)

中考最后20天英语作文怎么补救(中考最后10天英语30分提到80)

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中考最后20天英语作文怎么补救(中考最后10天英语30分提到80)

中考最后20天英语作文怎么补救【一】

②在人体全部22对常染色体中,1号染色体包含基因数量最多,块头最大。其基因数目多达3141个,是平均水平的两倍,破译难度也最大。一个由150名英国和美国科学家组成的团队历时10年,才完成了1号染色体的测序工作。历时16年的人类基因组计划书写完了“生命之书”的最后一个章节。

③据估计,人类染色体大约由2万到2.5万个基因组成。科学家在破译1号染色体的过程中,至少发现了1000种新基因。

④人类基因研究所获得的数据就像一座巨大的金矿。它将促进生物学的不同领域如神经生物学、细胞生物学等的发展。人们从中更可以发掘出诊断和治疗5000多种遗传疾病的方法,阻止甚至扭转一些疾病的遗传。其中,超过350种疾病被认为与1号染色体上的基因出现问题有关,包括癌症、老年痴呆症等。

⑤人类基因组计划,是人类生命科学史上最伟大的工程之一,是人类第一次系统、全面地解读和研究人类遗传物质DNA的.全球性合作计划。领导1号染色体测序项目的格雷戈里博士说:“公布人类最后也是最大一个染色体的测序,标志着建立在人类基因测序基础上的生物学和医学研究掀起高潮。”

1.从文中可知,目前科学家们已经完成了基因研究的什么工作?

2.第③段中加点词“至少”有何作用?

3.列数据是人们常用的说明方法。第④段中“5000多种”说明了什么?

4.请概括说明1号染色体研究成果所具有的意义。(不超过15字

5.从文中画线句可以看出,从事科学研究应该具备哪些精神?

参考答案

1.基因(或染色体的测序工作

2.“至少”即最少、不少于,用它来修饰“发现”,说明了发现新基因的数量之多,体现了说明文语言的科学严谨。

3.说明研究成果在医学上意义重大,成果非凡。

4.将促进生物学和医学研究的发展

5.锲而不舍的精神和团队合作的精神

中考最后20天英语作文怎么补救【二】

今天早晨,我早早地起了床,洗漱完毕便忐忑不安地走向院子里。这时,妈妈早已在院子里满头大汗地洗鞋子了。“咳!咳!咳!”妈妈这两天因在外面淋了点雨,得了重感冒,可每天还是不辞辛苦的.为我们爷俩操劳。想到这里,我顿时又觉的妈妈的额头上又多了几条皱纹,两鬓又多了几根白发。“妈妈,我,额一一”我话到嘴边,又马上咽了下去。“嗯,干什么?”妈妈满脸疑惑地望着我说。“嗯一一妈妈,我,我帮您把锅里熬的梨子水拿来吧!”我连忙应付道。“嗯,好呀!”梨子水是一种用冰糖、枇杷叶、梨子熬成的民间偏方。治感冒可好呢!看着妈妈咳得满头大汗的样子,我心中一怔,忙对妈妈说:“妈妈您别洗了,让我来洗吧!”妈妈起初不让,但在我的死缠滥打下还是同意了。我一边洗,妈妈一边在旁边指导。我心中则盘算着该怎样向妈妈说出那三个字。我心中鼓励自己:“袁望,加油!不就是三个字吗?有什么可怕的?又有什么好害羞的?只要大声说出来就万事大吉了!加油!”我终于鼓起了勇气。“袁望,这鞋上一定要刷一一”“stop!妈妈,我一一爱一一你!”我心中一块巨石终于落地了!可是马上又有一块巨石悬了起来,妈妈会有什么反应呢?只见妈妈一愣,继而对着我微微一笑。这一笑,带着暖暖的爱;这一笑,使妈妈多年的劳累付之一炬;这一笑,使妈妈忘记了所有的劳累!

我心中终于舒坦下来。我认为这是真正的微微一笑很倾城!孝顺,何必要等到长大,让我们为父母多做一些力所能及的事吧!

中考最后20天英语作文怎么补救【三】

The first day of high school life, I have some thoughts and feelings。 The passage of time can always give people some special things。

In the new environment, I feel a bit excited。 Be able to recognize the new students and teachers is my greatest gains。 In the next three years, we will learn、work and progress together to make our dreams come true。 I will have new friends, and share the joy and sadness with them。 The process of learning is also a growing process。

Similarly, I will also face many difficulties。 I might have difficulties in learning and getting along with classmates , bearing some pressure in life。 However, I will get stronger and get through every step of high school three years。

中考最后20天英语作文怎么补救【四】

Yesterday I saw the school first class, feeling very deep. This year's theme is beauty is near. Beauty, a very common words, we are literally think beauty is beautiful. So, what is the true meaning of beauty?

With the question I look up, the first lesson is to find beauty. How to find? It makes people lost in thought. When everybody zhang two monks confused, host "shenzhou" 9 astronaut liu Yang, please tell for you. Liu said, the universe is endless, much bigger than she had expected: long, on the other side of the galaxy, the star vega, mercury, Saturn... . All panoramic view. Time is the most interesting of weightlessness, everyone one by one all floating in the air, pens, book ah of what are messy, can be fun. Finally, she concludes the essence to find beauty, love sports, and more to find the beauty around, so beauty will show in front of you.

LiuLiLi mountain elementary school teachers as the second class of the bell took to the podium, she is only 20 years old this year, in this flower age, many girls are enjoying, who will suffer poor mountainous areas! Can't liu, she is out of the mountain, liu with great love for the children's happiness, she hold the children art, gymnastics and other mountainous area children can't learn knowledge. Liu planted beauty, transfer the beauty. Let the beauty of the mountains germination, results. So she right because when people called the most beautiful teacher, this is to create beautiful?

Gymnastics team player Chen yibing showed also in the field. His contribution for our country in the London Olympic Games, the host asked him why he is going to win? His answer: before the race, they are seen as a failure. But because of his companions support each other, encourage each other. Make them very first champions league. The companion's encouragement is beauty.

Yu Dan is the most let me have a feeling of the teacher's words. She hit a harmonious beauty, for example, put eggs, tea, carrot in boiling water, eggs, hardened into the fragrant tea, tea radish was soft. That means what? Hardened eggs tend to be the kind of person who are "really low on agreeableness, and most men are single minded and turnip are too weak, they couldn't get hold of degree dating, so don't be understood, so being bullied. And the tea? It combines with water, this kind of person is good at unity collective, so they are best represents the harmonious beauty.

The school first class with only an hour and a half, but let me benefit a lot.

中考最后20天英语作文怎么补救【五】

“放学了,放学了!”同学们一阵欢呼雀跃。我和我的同学——田默雨,我们都叫她小雨,像草原草原上的骏马一般“飞”出了校园。

就在这个风和日丽、繁花似锦的春天里,我俩跑向了对面的一片草地,小雨打了个滚坐在了草地上,我也学着她的样子。

然后,我说“小雨,你对学习都是盘根究底、韦编三绝,但我在这方面是碌碌无为,请你……”等我回过神来,早已不见小雨的踪影,我连忙跑到学校。

我们再次路过那条林间小路,我似乎又看见有许多茂盛而翠绿的树儿们在议论着它们的“儿女”——小鸟。该怎样给它们一个更温暖、更温馨的家,它们宛如在说:“我们一定要快长得更强壮!”不一会儿,我们就来到了音乐会广场,听到了小鸟的欢叫,鸭子在水里摇摆着,跳着舞,一阵微风徐徐吹来,树儿们“哗哗”地为它们伴奏,几只老鹰在天空盘旋,还有我们的脚步声,合成了一首振奋人心、奇妙无比的音乐。

我们最终还是恋恋不舍地离开了那令人赏心悦目的音乐,我们来到了花园。我看见了洁白无瑕的梨花,粉嘟嘟的桃花,还有……但我却被黄桷兰深深迷住了,它那迎面扑来的芳香让我靠近了它,我无法用语言来表达我对黄桷兰深深的爱意。它那一瞬间的绽放,让我情不自禁地一朵一朵摘下了它。小雨不知怎么的,似乎什么东西让她一下子恍然大悟,急得直跺脚,把我吓了一大跳,瞪着眼对我说:“被你摘下黄桷兰的地方,就不再出现那令你迷醉得五体投地的黄桷兰了他是属于大自然的,不是你的,你,你好自私!大自然会哭的,会生气的`!”小雨流出了滚烫的泪水,我也涌出了对不起黄桷兰的眼泪,急忙对小雨说:“小雨,对,对,对不起!我真的不知道会这样,对不起!”我又向黄桷兰跪下,哭着说:“对不起,黄桷兰,我不知道会这样,我再也不会伤害你了,对不起!对不起!对不起!过了一会儿,小雨拉着我的手,说:“希望你再也不要伤害它了,好吗?如果你能做到,我就原谅你。”我点点头,一阵微风吹来,黄桷兰似乎也点点头,似乎也原谅了我。我笑了,小雨也笑了,有两朵黄桷兰落到了我们各自的头上,我们异口同声:“这是黄桷兰送给我们的礼物!”我们手拿黄桷兰,一起回到了家。

朋友们,我对你们说:“我请你们,千万不要摘下令你们陶醉的花朵,因为你只是一时喜欢它们,你千万要控制自己的喜欢,因为它属于大自然,不属于我们我们,它们的美丽我们只能观赏,如果你真的喜欢那朵花或其它植物,你们一定要记住,千万不能索取!希望你们能做到,做到的朋友们,我真诚的对你们说声谢谢!

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