An electronic calculator is a small, portable electronic device used to perform both arithmetic operations and complex mathematical operations.

The first solid electronic calculator was created in the 1960 s, building on the extensive history of tools such as the abacus (developed around 2000 BC), and the mechanical calculator (developed in the 17^th century AD). It was developed in parallel with the analog computers of the day.

In addition to general purpose of calculators, there are those designed for specific markets, for example, there are scientific calculators which include trigonometric and statistical calculations. Some calculators even have the ability to do computer algebra. Graphing calculators can be used to graph functions defined on the real line, or higher dimensional Euclidean space.

It was developed in parallel with the analog computers of the day. The underlined word refers to ...

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?

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.

A public place where we can have free access to the internet is …

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.

A laptop has become very popular because …

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.

From the text we know that ….

According to the text, what can obviously be seen from the male and female?

Cow

Cows are cattle which belong to Bovidae famili and Bovinae upafamili. Cows that have been neutered and are typically used to plow the field named Ox. Cows are cared primarily for the benefit of milk and meat as human food.

Cows have a scientific name as Bos Taurus. Cows have a gestation period of over 274 days. Average cow lifespans is 15 years. The male weight is typically around 1,100 kg, while average females’ weight is about 720 kg.

Jellyfish are not really fish. They are invertebrate animals. This means that unlike fish or people, they have no backbones. In fact, they have no bones at all.

Jellyfish have stomachs and mouths, but no heads. They have nervous systems for sensing the world around them, but no brains. They are made almost entirely of water, which is why you can look through them.

Some jellyfish can glow in darkness by making their own light. The light is made by a chemical reaction inside the jellyfish. Scientists believe jellyfish glow for several reasons. For example, they may glow to scare away predators or to attract animals they like to eat.

Most jellyfish live in salt water, apart from a few types that live in fresh water. Jellyfish are found in oceans and seas all over the world. They live in warm, tropical seas and in icy waters near the North and South poles.

Which one is TRUE about the jellyfish based on the text?

Some jellyfish can glow in darkness by making their own light. The light is made by a chemical reaction inside the jellyfish. Scientists believe jellyfish glow for several reasons. For example, they may glow to scare away predators or to attract animals they like to eat.

The word “glow” in the sentence means …

A storm is a disturbance of the ordinary conditions of the atmosphere accompanied by wind, rain, snow, sleet, hail (frozen rain), or thunder and lighting. Types of storms include the extra tropical cyclone, the common, large-scale storm of temperate latitudes; the tropical cyclone, or hurricane, which is somewhat smaller in area than the former and accompanied by high winds and heavy rains; the tornado, or “twister,” a small but intense storm with very high winds, usually of limited duration; and the thunderstorm, local in nature and accompanied by brief but heavy rain showers and often by hail. The term storm is also applied to blizzard, sandstorms, and dust storms, in which high wind is the dominant meteorological element.

What is the text tell us about?

One of the most valuable and widespread plant is the bamboo. It is a tall treelike grass. There are more than 350 species. Most grow in Asia and on islands of the Indian and Pacific oceans. Although bamboo is a tropical plant, it can grow in a cooler temperate zones.

A single root may produce as many as 100 stems. They are hollow, woody, and jointed. The stems are sometimes 3 feet (0,9 meter) around. Sprouts grow fast, at times 1 foot (0,3 meter) or more a day. They may grow to 30, 50, or even 130 feet (9 to 40 meters) in height. Near the top are many branches. Some species do not bloom for 60 years or more.

Bamboo products range from food to houses. Asian people usually use the sprouts as vegetables. In East and Southeast Asia people use the hollow stems for water pipes and for building bridges and houses. Short sections serve as pails and cooking utensils. The stems make for walls, floors, and roofs. Thinner strips are woven into mats, chairs, cages, and curtains. Bamboo fishing rods are made of matched strips glued together. Split bamboo is also used for chopsticks and fan ribs. The inner parts of the stems of several species are made into quality papers.

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 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.

What does the adult male bear weigh?

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?

Snakes are reptiles (cold-blooded creatures). They belong to the same group as lizards (the scaled group, Squamata) but from a sub-group of their own (Serpentes).

Snakes have two legs but a long time ago they had claws to help them slither along. Snakes are not slimy. They are covered in scales which are just bumps on the skin. Their skin is hard and glossy to reduce friction as the snake slithers along the ground.

Snakes often sun bathe on rocks in the warm weather. This is because snakes are cold-blooded; they need the sun’s warmth to heat their bodies up.

Most snakes live in the country. Some types of snakes live in tress, some live in water, but most live on the ground in deserted rabbit burrows, in thick, long grass and in old logs.

A snake’s diet usually consists of frogs, lizard, and mice and other snakes. The Anaconda can eat small crocodiles and even bears. Many snakes protect themselves with their fangs. Some snakes are protected by scaring their enemies away like the Cobra. The flying snakes glide away from danger. Their ribs spread apart and the skin stretches out. Its technique is just like the sugar gliders.

We know from the text that snakes…

Snakes are reptiles (cold-blooded creatures). They belong to the same group as lizards (the scaled group, Squamata) but from a sub-group of their own (Serpentes).

Snakes have two legs but a long time ago they had claws to help them slither along. Snakes are not slimy. They are covered in scales which are just bumps on the skin. Their skin is hard and glossy to reduce friction as the snake slithers along the ground.

Snakes often sun bathe on rocks in the warm weather. This is because snakes are cold-blooded; they need the sun’s warmth to heat their bodies up.

Most snakes live in the country. Some types of snakes live in tress, some live in water, but most live on the ground in deserted rabbit burrows, in thick, long grass and in old logs.

A snake’s diet usually consists of frogs, lizard, and mice and other snakes. The Anaconda can eat small crocodiles and even bears. Many snakes protect themselves with their fangs. Some snakes are protected by scaring their enemies away like the Cobra. The flying snakes glide away from danger. Their ribs spread apart and the skin stretches out. Its technique is just like the sugar gliders.

Some types of snakes live in tress, some live in water, but most live on the ground in deserted rabbit burrows,…(paragraph 4).The word “burrows “ has the similar meaning with…

Snakes are reptiles (cold-blooded creatures). They belong to the same group as lizards (the scaled group, Squamata) but from a sub-group of their own (Serpentes).

Snakes have two legs but a long time ago they had claws to help them slither along. Snakes are not slimy. They are covered in scales which are just bumps on the skin. Their skin is hard and glossy to reduce friction as the snake slithers along the ground.

Snakes often sun bathe on rocks in the warm weather. This is because snakes are cold-blooded; they need the sun’s warmth to heat their bodies up.

Most snakes live in the country. Some types of snakes live in tress, some live in water, but most live on the ground in deserted rabbit burrows, in thick, long grass and in old logs.

A snake’s diet usually consists of frogs, lizard, and mice and other snakes. The Anaconda can eat small crocodiles and even bears. Many snakes protect themselves with their fangs. Some snakes are protected by scaring their enemies away like the Cobra. The flying snakes glide away from danger. Their ribs spread apart and the skin stretches out. Its technique is just like the sugar gliders.

How do flying snakes protect themselves

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 text tells us about….

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 third paragraph is mainly about the fact that….

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 most distinguishing characteristic of an elephant is…..

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….