A laptop is a kind of computer unit which has the same function as a PC (Personal Computer), but it’s smaller, lighter and of different sizes. Nowadays, most people choose laptops for several reasons.

A laptop is a portable device. This portability is very helpful for our work, study and other activities. We do not need complicated cable installations to activate a laptop. With a laptop, we can do our work anytime and anywhere.

Moreover, a laptop allows us to access the internet in public places which provide free access called hot spot areas. Some people like to use this facility to carry out their tasks.

Finally, a laptop consumes energy more efficiently than a PC does. This device uses a rechargeable battery as a source of electric energy. So, if we prefer using a laptop, it means that we support the government program to save energy. That’s why a laptop has become very popular recently.

What is the purpose of the text above?

An eclipse is an astronomical event that occurs when one celestial object moves into the shadow of another. The term is most often used to describe either a solar eclipse, when the Moon's shadow crosses the Earth's surface, or a lunar eclipse, when the Moon moves into the shadow of Earth.

Eclipses may occur when the Earth and Moon are aligned with the Sun, and the shadow of one body cast by the Sun falls on the other. So at New Moon (or rather Dark Moon), when the Moon is in conjunction with the Sun, the Moon may pass in front of the Sun as seen from a narrow region on the surface of the Earth and cause a solar eclipse. At Full Moon, when the Moon is in opposition to the Sun, the Moon may pass through the shadow of the Earth, and a lunar eclipse is visible from the night half of the Earth.

An eclipse does not happen at every New or Full Moon, because the plane of the orbit of the Moon around the Earth is tilted with respect to the plane of the orbit of the Earth around the Sun, so as seen from the Earth, when the Moon is nearest to the Sun (New Moon) or at largest distance (Full Moon), the three bodies usually are not exactly on the same line.

When does lunar eclipse happen?

An elephant is the largest and strongest animals. It is a strange looking animal with its thick legs, huge sides and backs, large hanging ears, a small tail, little eyes, long white tusks and above all it has a long nose, the trunk.

The trunk is elephant’s peculiar feature, and it has various uses. The elephant draws up water by its trunk and can squirt it all over its body like a shower bath. It can also lift leaves and puts them into its mouth. In fact the trunk serves the elephant as a long arm and hand. An elephant looks very clumsy and heavy and yet it can move very quickly.

The elephant is a very intelligent animal. Its intelligence combined with its great strength make it a very useful servant to man and it can be trained to serve in many ways such as carry heavy loads, hunt for tigers and even fight.

The third paragraph is mainly about the fact that ....

Birds belong to a class of warm blooded vertebrate animals with feather covered bodies. Next to the mammals, birds are the most important group of land-living vertebrates. All birds have feathers, although in some types, particularly those that can not fly, the normal structure of the feathers may be much modified and be downy, woolly, or straw like. The forelimbs of birds are modified into wings. The bony part of the tail, except in the very earliest fossil birds, is very short, and the visible tail is composed of feathers only. The teeth are absent except in some fossil forms. As in mammals-the only other group of warm blooded animal-the circulation is highly perfected so that there is no mixing of arterial and venous blood, but the arrangement of veins and arteries by which this is accomplished, is different in the two groups. Birds have keen hearing, although they have no external ears. The sense of sight also is very keen, but the sense of smell is weak or lacking, except in a small few vultures and other birds.

From the text we can conclude that both birds and mammals have ....

Butterflies are a type of insect with large and often colorful wings. They start out as eggs. They lay their eggs on leaves. The eggs hatch into caterpillars with tabular body. The caterpillar eats leaves, beds, or flowers of plants.

When a caterpillar is full sized, it goes into another stage called chrysalis. Caterpillars attach themselves to something solid before becoming a chrysalis. The caterpillar inside the chrysalis changes into a butterfly. Some butterflies make the change in one week. Some others take years to change.

When the change is complete, the adult butterfly splits the chrysalis. The insect unfolds its wings and pumps blood and air into then. It spreads out the wings until they become dry and harder. The beautiful butterfly then flies to get nectar from flowers. Most butterflies live only for one or two weeks.

What is the text mostly about?

The polar bear is a bear native to the Arctic Ocean and its surrounding seas. An adult male weighs about four hundred to six hundred and eighty kilograms, while an adult female is about half that size. Although it is closely related to the brown bear, it has paws to occupy a narrow ecological niche with many bony characteristics adapted to for cold temperatures, for moving across the snow, ice, open water, and for hunting seals which make up most of its diets. Although most of polar bears are born on land, it spends most of its time at sea, hence its name meaning maritime bear and can hunt consistently only from sea ice. It spends much of the year on frozen sea.

Where did the animal live?

An elephant is the largest and strongest animals. It is a strange looking animal with its thick legs, huge sides and backs, large hanging ears, a small tall, little eyes, long white tusks and above all it has a long noise, the trunk.

The trunk is the elephant’s peculiar feature, and it has various uses. The elephant draws up water by its trunk and can squirt it all over its body like a shower bath. It can also lift leaves and puts them into its mouth. In fact the trunk serves the elephant as a long am and hand. An elephant looks very clumsy and heavy and yet it can move very quickly.

The elephant is a very intelligent animal. Its intelligence combined with its great strength makes it a very useful servant to man and it can be trained to serve in various ways such as carry heavy loads, hunt for tigers and even fight.

The elephant draws up water by its trunk and can squirt it all over its body like a shower bath (paragraph 2). The word “it” refers to….

The Shard is an 87-storey skyscraper, which sits in the heart of London. It is known as the shard of glass. Construction began in 2009 and was completed three years later in 2012, making it Western Europe’s tallest building.

Designed by architect Renzo Piano, The Shard is the second tallest free standing structure in the UK. Its exterior boasts 11,000 glass panels – that’s equivalent in area to eight football pitches or two-and-a-half Trafalgar Squares.

The building was developed to have multiple uses, describes on the website as a ‘vertical city where people can live, work and relax’. This motto was clearly taken on board that was found on the 72nd floor towards the end of construction.

What is the text about?

The polar bear is a bear native to the Arctic Ocean and its surrounding seas. An adult male weighs about four hundred and eighty kilograms to six hundred , while an adult female is about half that size. Although it is closely related to the brown bear, it has paws to occupy a narrow ecological niche with many bony characteristics adapted to for cold temperatures, for moving across the snow, ice, open water, and for hunting seals which make up most of its diets. Although most of polar bears are born on land, it spends most of its time at sea, hence its name meaning maritime bear and can hunt consistently only from sea ice. It spends much of the year on frozen sea.

What does the adult male bear weigh?