বইয়ে খোঁজার সময় নাই
সব কিছু এখানেই পাই

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Dengue Fever

Dengue fever has now become a serious problem in Bangladesh. Each and everyone in our country is panicky due to this dangerous disease. The scarcity of bed occurs in hospitals and clinics. Dengue is an R. N. A. Fiabby viral extreme fever. As African female mosquito named ‘Adies Egypty’ carries the garm of this disease. It lays eggs in the stagnant water of any place. There are two types of dengue fever-Classical and Hemorrhagic. Dengue virus has four serotypes. They are DEN-1, DEN-2, DEN-3, DEN-4. Any of them can cause dengue fever. But DEN-2 and DEN-3 are too much dangerous. These two serotypes are responsible for most serious Hemorrhagic dengue fever. Classical dengue fever is not so serious like Hemorrhagic. The symptoms of classical dengue fever are high fever, vomit, stomach-pain, excess headache, pain at joint of bones, waist, and backside of eyes. Sometimes bone-pain becomes so extreme that it seems to break of bone. So it is called ‘Break bone fever’. Anyone recovers from it within ¾ days. Sometimes the patient feels weak and aversion. But Hemorrhagic dengue fever often causes the death of a patient. The symptoms of classical dengue fever become extreme in this case. Bleeding continues with these symptoms. Especially bleeding causes from gum and nose. Congealed blood and reddish circle are seen under the skin. It causes blood-vomit. Congealed blood in the white portion of eyes is found. Black blood goes with stool. Internal blood can be caused even in brain and heart. It causes ‘hypovolemic shock’ which may cause patients’ death. Dengue fever is not an infectious disease. Still, effective treatment has not come out. Doctors prescribe medicines for pain and vomit. Sometimes saline is pushed through vain. But it’s not enough at all. Actually ‘prevention is better than cure’ is perfect in dengue fever. The only way is to control and destroy Adie's mosquito. To do so, we should keep our surroundings neat and clean and free of stagnant water. Dengue patient will take formal and liquid food and sufficient water repeatedly. If each and everyone become conscious, dengue fever can surely be eradicated from our country.

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Earthquake Disaster

Earthquake causes a great disaster. It is a sudden movement of a part of the earth’s surface caused by the deep crack in the earth or by the volcanic eruption. Some regions of the earth are prone to an earthquake while others are comparatively safe from this natural disaster. Some countries like Japan, Iran etc. are frequently hit by an earthquake. Houses and bridges in these countries are built shock-proof. Forecast regarding the occurrence of an earthquake is not possible. A severe earthquake causes widespread destruction of houses and properties. People are crushed under the broken houses. Often several quakes hit a place at short intervals. So after a quake people live in tents on the open field. When a severe quake hits a populous city thousands of people are killed and injured. Many people are trapped in the broken houses and it takes days to rescue them. The only way to get rid of the ravage of this natural disaster is to build houses, bridges, and roads in such a way that they can resist the tremors.

Same paragraph collected from another book

Earthquake is a sudden and violent shaking of the earth’s surface. It occurs for various reasons : it occurs when the nearby volcanoes emanate lava. Moreover, it there is any fault line under any area, a slight shaking of the earth can cause a great earthquake. In most cases, earthquake occurs because some gases try to come out from the depth of the earth. Earthquake causes a great damage to people and property in the affected areas. If any major earthquake occurs in Bangladesh, most of the buildings in most city areas will be destroyed as they are not built in accordance with an earthquake resistant standard. However, in order to protect us from such an impending danger, we must be conscious about the causes and results of earthquake. We should not build house without the advice of experts so that it can survive in any earthquake. Moreover, the govt. should build a huge number of earthquake-shelter-centres and make the people aware about in impending earthquake through electronic media like radio, TV, etc. so that people can take necessary steps to save themselves.

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E-Mail

Electronic mail popularly known as e-mail is the communication of textual message via electronic means. In this system personal computer, a modem and a telephone connection are necessary. It requires an e-mail account number. E-mail is delivered to individual electronic mailboxes based on computers. Messages can be transmitted from one country to another within seconds. It is far cheaper than telephone calls. Privacy is ensured as the e-mail is delivered to an individual’s mailbox which can be accessed or opened by the intended recipient. An important advantage of e-mail is its ability to reduce the consumption of paper in the office. Nowadays trade and commerce have become greatly dependent on this speedy mode of communication. E-mail gives us an opportunity to face the world and maintains worldwide information network covering even the remote areas of the globe.

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E-Commerce

E-commerce is the short name for electronic commerce. It means business transaction through the internet, telephone, credit card etc. without the help of cheque or physical payment of money on the part of the buyer. The money is paid by the bank or company. It is the most modern method of transaction and is in practice in the developed countries of the world. Any information regarding the price, availability, and quality of the goods is transmitted through the internet and telephone. Thus E-commerce facilitates business transaction without the trouble and risk of carrying money physically. In our country attempt is being made to introduce it in big cities. E-commerce is especially convenient in import and export business. An importer in one country can know about a commodity he wishes to import from another country and order for it through the internet without being physically present there. He may even see the commodity on the screen and be sure of its quality. Thus money, labour and time are saved in the transaction through the E-commerce system.

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Examination Centres

An examination centre is a place where a public examination is held. Generally, schools, colleges, and madrasas are chosen as examination centres. Examination centres are fearful places for the nervous student. In the examination centres, only the examinees, the invigilators, and the examination related authorities have free access during the examination period. An examination centre is a place of great anxiety. The students are in great anxiety whether the questions will be easy or hard, common or uncommon. The parents of the examinees are also found in great anxiety whether their son or daughter can do well in the examination. Polices are appointed in the examination centres to control the law and order situation during the examination. The police are also given the power to prevent outsiders to cross the restricted areas. The environment of an examination centre is calm and quiet. Sometimes some unexpected incidents occur in the examination centres. The examination centres in the villages often have not the proper environment for taking the examination properly. If the rules and regulations in the examination centre are loose, various malpractices are adopted by the examinees and the examinees are not judged properly. On the whole, examination centres are sacred places and everybody should try to maintain their sanctity.

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