今年,我借着放寒假的时间,去三亚旅游。
三亚一年四季都很热,所以有很多热带雨林,我最喜欢五指山上的“呀诺达热带雨林。”
导游带着我们一起游览呀诺大的热带植物。呀诺达里的植物种类很多,各式各样,奇形怪状,千姿百态,每种不同类型的树有不同的特点和好处:比如凤尾树,在它的树干上划一刀或刺一个小洞,水就会流出来,它被称为“沙漠之泉。”比如鸡蛋花,这听起来像是一朵花,其实是一棵树,它光秃秃的,但一开花,那个花就像鸡蛋,所以叫做鸡蛋花。比如三亚的市话——三叶花,它的花只有三片“花瓣”把“花心”包住,其实那个“花瓣”是叶子,那个叶子是粉红色的,里面的才是花。比如榕树,虽然大家都看见过榕树,但这儿的榕树里面是空心的,它还能健康快乐地成长。
我还记得呀诺达的.六大奇观和最毒的树,导游带我们游览了这七处地方,我最想说的是两大奇观和世界上最毒的树。世界上最毒的树是见血封喉,在它的枝条上会流下一种毒液,这叫“见血封喉毒”,也叫“箭毒”。当这种毒通过你的伤口进入人体内,你就会全身麻痹,过一段时间,就会中毒身亡,“箭毒”是一种涂在弓箭上的毒,射中的物体就动不了了。两大奇观就是植物绞***和水中榕树,植物绞***是两颗树缠在一起,一棵树把另一颗***死,把它包住,吸取养分。水中榕树,是一棵生在水里的榕树,它的根抓住水下的石头,不用泥土,而且中间是空的,非常茂盛。
我喜欢热带雨林,下次一定要好好观察!
the sun rises in the east and sets in the west, which is caused by the rotation of the earth as you all know. but have you ever thought of the effect of the earths rotation on man and can you imagine what would happen if the earth stopped rotating?
the radius of the earth is about 6,370 kilometres. it takes the earth 24 hours to rotate once. objects on the earths equator move with the earth at a speed of 460 metres per second, and the air close to the earths surface turns at the same speed. if the earth stopped rotating suddenly, the air would keep flowing eastward at a speed of 460 metres per second. the wind would be fourteen times as powerful as a hurricane. at the same time sea water would rush eastward at a speed of several hundred metres per second, which might do damages much greater than a seaquake would do. obviously, men could hardly stand such a catastrophe.
even if such a catastrophe would not happen, there would be a great temperature difference on the two hemispheres of the earth, and the four seasons of the year would no longer occur because a day and a night would be as long as a whole year instead of 24 hours. all this would greatly affect the life of human beings, imals and plants and that would cause worse results than anything imaginable.
眼睛是人体中最重要的器官之一,如果保护不好,让眼睛害了病、受了伤,就会妨碍视力甚至失明,也会影响工作和学习。俗语说“手眼为活”,道理就在这里。保护眼睛的措施,随着年龄的增长有所不同。
胎儿时期:胎儿的眼睛,是在母体内随着全身器官逐步发育形成的。保护胎儿的眼睛,主要是从孕妇方面着手,孕妇除了预防外伤、注意营养外,更重要的是及时预防和治疗传染病,尤其是在***的头3个月内,最要紧的是不要染上风疹和重感冒,因为在妊娠期间患了这些病,小孩的眼睛常易发生严重的疾病,如先天性白内障等。
乳儿时期:由出生到1周岁这段时间不要包着孩子看过强的光线,以防损伤视力;不要让孩子看固定不变的东西,以免引起斜视。
学龄前期:1至7周岁的儿童,主要是玩耍,所以,为了保护眼睛,必须注意选择不带刃以及没有锐角的玩具;同时,家长和保教人员要经常教育孩子,不要做危险性的游戏,看书时光线要充足,但应避开强烈的阳光,眼与物体要保持一定的距离(以1市尺左右为宜);如有斜视,应及时去医院矫治;并要培养良好的卫生习惯,不用手指揉眼,不用别人的手巾擦眼睛。
学龄儿童:主要是看书的姿势要正确,书与眼的远近要适宜,光线要充足,不要在走路或乘车时看书,同时要注意眼病的预防和治疗。
成人时期:成年人,身体各部已经基本发育成熟,眼睛也是这样,所以对各种环境,条件的适应能力也比较强了。这时保护眼睛,主要应从免受外伤方面注意,在各种劳动中要遵守安全操作规程。同时要注意疾病的预防、治疗。有沙眼的应当积极治疗,以免发展严重,造成倒睫;得过虹膜炎的,应注意预防受凉感冒,以免连续复发,形成白内障。
老年期:最常发生的眼病是青光眼。这种病很严重,有时突然爆发,视力高度降低,并伴有头痛、恶心、呕吐、视物如在云雾中等症状,如果治疗不当,能完全失明;有的发展很缓慢,初起在晚上看灯时,不是在眼前出现红禄圈,有头痛等不适症状,慢慢的眼睛就坏了。年纪大的人如果发现上述症状,应及时就医。
引起青光眼的原因尚未完全了解,但发病的诱因常为焦急、争吵、暴怒等。因此,加强性格锻炼,遇事要冷静、沉着,也是预防这种眼病的有效措施
Giant Panda is our national treasure, the state can be said for the protection of giant pandas put a lot of human and material resources giant now has been the world's people the protection and care, which is a good thing, of course, the Tibetan antelope as the country's animal protection , The National People have been recognized, however, this tiger? The poor will be extinct Siberian tiger who is going to have a genuine concern and care a little bit?
According to statistics, the Siberian tiger left at present, less than 20, still such a small number of these survive, has had imagined. Two years ago, in the mountains of Huanren, Liaoning found to be a man to die under the presentation of the Siberian tiger, from this we can see that the above countries and the people of the importance we attach to it, this first Manchurian tiger is actually how the dead do not Conclusion, and the other is only from the northeast where hu came to the place where the wonder and the third is the matter did not rise to the national media in particular. This really puzzled the other person you! Is it really the other tiger who fear love is not worth it, it really fate of the Siberian tiger so?
Towering mountains should not unique to human beings, should not have dense forest unique to human beings, rivers clear this should not be unique to human beings, the Siberian tiger survival of this nature should not be unique to human beings. Siberian tiger to the left of a piece of heaven and earth to survive it, the High IQ is the human species, there are still ways to leave that piece of local survival, and the tiger have to leave that piece of the local dead; you save tigers, is the human population control, engage in Family planning, and the Siberian tiger is scarce Rending it! Now we can hear the cries of tigers in the future even the Siberian tiger can be heard the cries.
在巴西,有一个世界上最大的热带雨林,他的神秘莫测早就把我深深地吸引住了。我再也忍不住了,收拾好行李,独自一个人乘上高科技的“超速飞行器”闯了进去……
在热带雨林里,到处都是些热带植物和珍稀惜动物,这些的景观让我想到:我正是来对了。瞧!那是:“跳舞草”,“银衫”“珙桐”……这些奇珍异草都给了我一个又一个的惊喜。突然,天公不做美,天上竟然下起雨,打起雷来。而我竟然忘了带伞,怎么办!我一边跑着一边寻找躲避的地方,这时,我看见一个山洞,像在沙漠里看到绿洲一样,不顾一切的进了洞。打开手电筒,我一步步往前走,走到洞中央,我看到了一片奇景:这真是钟乳石的天堂,一块块奇形怪状、千姿百态的钟乳石,都是世界罕见的,而且还有蓝色、红色、黄色和各种颜色,把整个洞映的五彩斑斓!真正是一个奇迹的山洞!
我继续向前走,这时,不远处射出一道夺目的金光。我走进一看,怎么是一个发光的蛋,它比一般的蛋要打许多,而且蛋壳上面布满一层金色的鳞片,那光就是从这里散发出来的,里面到底是什么呢?我正在想,突然,一声清脆的的蛋壳裂开的声音,我定眼一看,里面竟然钻出一只虎头虎脑,十分活泼的小猴子!怎么会呢?世上怎么会有“猴蛋”呢?这只小猴子竟对我自我介绍起来:“我叫多比,我要你去见一见世界上保持得最完好而从来没有人类发掘的原始森林!”于是,我与这位小侯子成了好朋友。
从这儿到小猴子所说的那片原始森林要走2、3天,一路上我和调皮的小猴子在一起,一会儿打打野果,一会儿采采蘑菇,尽情地享受着大自然给予的恩惠。3天过后,我们走进了那片原始森林。一走进森林,就有了一丝凉意,仔细一看,这里的植物全是将要面临着灭绝的植物:银山、桫椤、银杏。我真不敢相信,世界上居然有这么完好的森林!小猴子告诉我:“这是我们的乐园,这里没有污染,充满宁静,而我们这些家族成员也十分珍惜这自然资源,从来不破坏它们。”这时我才发现,这里除了猴子,在没有别的动物了,包括一只鸟!这里的一切让我震撼不已。
大自然的奥秘是无穷无尽的,只要我们努力探索,一定会有许多惊喜的发现!
下面谈谈学习毅力的.问题。如果你有坚强的毅力,那么世界上就没有什么难事。学英语关键是能够持之以恒。
在学习过程中,你应该制订一个计划,一天记住几个单词,一天记住一两个句型。你不要小看“持之以恒”的力量。举个例子:
如果你一天背5个单词一年就是1825个单词,相当于初中三年再加高中一年零两个月的词汇量。如果你坚持两年你就能住3650个单词,相当于中学六年包括本科两年的词汇量。
在制订计划时要遵循以下几项原则:
1、计划要切实可行,不要好高务远。上面的例子已经说明,只要你能坚持天天学习,英语一定能学好。
2、要有坚强的毅力,每天都学习,不因为某些事而耽误了学习。如果哪天的工作没有完成,第二天一定要补上。连续不学习的时间不要超过两天。
3、要有一个帐本,哪天学会了哪几个单词,哪几个句型一定记录在案。
4、为了把单词、句型真正学到手,第二天一定要复习第一天的,第三天一定要复习第二天和第一天的内容。
5、所选择的课本可以是一套或两套,千万别太多。实际学英语的书没有什么好坏之分,只要你能按照一套或两
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