not harmful to the environment eco-friendly cars make a low impact on the environment.
to keep something safe from harm, damage, or loss
You should protect your brother from bullies.
the process of making land, water, air, etc., dirty and not safe or suitable to use
Air pollution from traffic fumes is a serious problem in large cities.
existing in nature and not produced or caused by people
Cotton is a natural material unlike plastic.
capable of producing desired results without wasting materials, time, or energy
My car is very efficient. I rarely have to buy gas.
an effect or influence
Divorce can have a negative impact on young children.
to lift up
Too much salt in your diet can elevate your blood pressure.
to remove or take away
People are trying to reduce or eliminate unhealthy foods from their diet.
to support or encourage
The government is promoting the use of public transportation instead of driving.
involving the use of natural products and energy in a way that does not harm the Environment
Solar power is sustainable energy because it will always be available, while oil is not because supplies may be depleted.
the careful use of natural resources (such as trees, oil, and water) to prevent them from being lost or wasted
Water conservation practices include recycling and reusing water.
a dry explosive substance used to propel projectiles from guns gunpowder was first used by the Chinese in fireworks.
to find out, either by accident or by searching
I discovered a great new restaurant before it became popular.
to look for; to try to find
We spent three hours searching for the car keys before we could leave.
normal; not special or different
Ancient scientists tried to turn ordinary substances into gold.
a material; a solid, powder, liquid, or gas with particular properties
What kind of substances are in this paint?
to frighten or fill with fear
In the past, people believed fireworks would scare evil spirits with their loud sound.
an exhibition or show
Firework-masters were well respected in ancient China for their skill in making amazing displays of light and sound.
a group of shows that include art, acting, singing, and dancing
The wine festival is held year after year in France.
a special time or event
A birthday is an important occasion.
to mark a special event or to mark success with happiness
Do you celebrate on New Year’s Eve?
a legal US holiday celebrating Declaration of Independence
In many countries, fireworks are used to celebrate national holidays, such as Independence Day in the US.
to be different from
I differ from my brother: he is short, while I am tall.
the way people say a word
What is the correct pronunciation of your name?
a collection of words in a language
The little boy has a big vocabulary because he knows a lot of words.
an expression in which each word separately has different meanings from the whole meaning
There are many idioms in American English.
to move in a different direction or be separate
The road diverged into two paths that led to our houses.
Everyone can have a separate bedroom.
topically broad, not considering details
In general, you should always ask questions if you don't completely understand something.
to stay away from
I tried to avoid the professor after I failed the test.
not very much in amount, range, or degree
It is because there are limited sources of food and water in the desert.
a car, van, or truck
Korea has become one of the major automobile manufacturers.
relating to the correct use of grammar
Korean and English are grammatically very different languages.
a person who creates a new product
The fastest growing industry is technology, and the fastest growing technology job is mobile app developer.
the process of growing or increasing; the amount of increase
The large growth in population means this is a good place to open a new store.
created by human beings, not natural artificial legs are made from light materials, like plastic.
the ability to learn and think
He is clearly of high intelligence because he learned to build an app in only two weeks.
to put things in different groups or in a particular order
He sorted his clothes by colors and sizes.
without needing human control
He automatically thought they were talking about him.
a person who creates computer programs
We need a(n) programmer to improve our accounting system.
to give attention or importance to
Due to her sickness, she found it difficult to focus on her work.
the way that people think about a person or company
Computer workers have a(n) image of being dull.
to think about something in a particular way
Maxspeed is perceived as the most reliable company in this business.
text, videos, or pictures shared on the Internet
He opened the box to take out the contents inside.
a usually small area of land surrounded on all sides by water
The island was surrounded by clear blue water.
one of seven very large areas of land, such as Africa or Asia
The continent of South America has many countries, including Brazil.
the inside of an area
Have you visited the interior of the country yet?
a large area where there is almost no water, rain, or plants
The desert is very hot and has little water.
near a coast, where land and sea meet
The largest cities in Australia are in the eastern, coastal area.
people originally native to the land aborigines were the first people to live in Australia.
to take as one’s own
James Cook claimed eastern Australia for Britain in 1788.
a place where people have come and built homes
The European immigrants set up settlements to fend off the natives.
the act of a country spreading to a new area or territory by allowing its people to settle there
Since the colonization of India by the British, India has prospered in many ways.
to move from one place to another
He migrated from Europe to America.
a small animal from Australia whose young are born from eggs
The platypus lives in rivers and lays eggs.
to refer to or speak about
George mentioned you may visit India this summer.
a written work about some topic
I can’t read this text. I don’t understand the language.
belonging to the distant past
Chess has been in existence since ancient times.
to have as a source
She derives pleasure from watching her grandchildren play.
a discussion about a subject on which people have opposing views
There is no debate that smoking is bad for health.
the creation of a new device or idea
I think the most important invention was the electric light bulb.
to the contrary
with the opposite meaning or implication
Show me some evidence to the contrary.
to follow or study the development of something
I found no trace of evidence at the crime scene.
the beginning, cause, or source of something
The origin of chess is still debatable.
having a strong desire to win or be the best at something competitive chess began in about 1834.
referring or relating to two or more nations
There’s a(n) international book fair this weekend, and famous authors will be there.
to start or organize on a foundation
The judge made her decision based on the evidence.
the state of being puzzled or unclear
Before the establishment of Greenwich Mean Time, railroad timetables were confusing because every town had its own time.
a list of the times when buses, trains, and planes are expected to leave or arrive
The first lesson on the timetable for Monday is math.
to invent a plan, system, or machine
The prisoners devised a plan for escape that involved digging a hole through the floor.
a person who runs or is in charge of a train
The engineer found a new way of burning fuel more efficiently.
a meeting organized on a particular subject
Bill Gates will speak at the computer conference next month.
any north-south line on world maps
Lines of longitude can also be called meridians.
distance to the west or east of a line passing through Greenwich
When you cross a line of longitude, the time might be different.
an area of land
My time zone is different from yours, so call me in the evening.
the edge of a country
A river marks the border between the United States and Mexico.
to stretch out; to draw out to the full length
We can extend the entry deadline for one more week.
to think of or consider
For thousands of years, ginseng has been regarded as an herb that can promote good health.
having medicine-like effects that can treat illnesses
Ginseng is generally taken for it medicinal qualities.
Exercise is a great way to reduce stress.
ready for use
Tea and chewing gum are two of the many kinds of ginseng products available.
related to buying and selling things commercial businesses cannot be built in a residential zone.
the act of cultivating; the process of developing crops or plants
Farming is the cultivation of plants.
the movement of blood through the body
The heart is the engine that keeps blood circulation regular in your body.
to send a product to be sold in another country
The United States exports many cereals and grains.
not allowed by law
Collecting wild ginseng in most of America is illegal because the root has become rare in the wild.
to check if something is true by careful investigation
Witnesses claimed that they saw an aircraft from outer space, but scientists could not verify their claims.
an advantage; a helpful result
People can get many health benefits from doing a little exercise every day.
a thick, sticky substance that is produced by some trees
Archaeologists discovered that prehistoric people chewed tree resin.
to use teeth to cut food into small pieces before swallowing
You should chew your food well before you swallow it.
the watery liquid in all trees
Furthermore, the ancient Mayans from Central America chewed sap from the sapodilla tree.
something from which another thing develops or can develop
Flour is the basis of most cakes and bread.
a commercial activity concerned with the processing of raw materials
Hollywood is the heart of the world movie industry.
a kind or make; a specific type of a product
Coca-Cola is the name of a brand of soft drink.
something that you drink to stop being thirsty
The best thirst quencher is not Gatorade or pop drinks.
to make or create
It is not easy to produce good bubble gum.
shelter or protection from danger or hardship
When it started to rain, she found refuge in the house.
a machine from which one can buy things like snacks or drinks
Chewing gum first became available in vending machines in 1888.
tending to stick
I got some honey on my hands, and they were very sticky
to agree or accept something is true or exists
Most people generally acknowledge Shakespeare as the greatest writer in the English language.
the state of being very well-known
It was very sad because he died young and at the height of his fame.
a doubt; an idea that something is likely not true
There are suspicions that Shakespeare attended grammar school, although there are no records of it.
the higher ground, especially along the sides of a river
The ship got stuck on the bank of the river.
relating to or as shown by documents
Your passport gives documentary proof that you are a citizen of your country.
an official document showing particular facts are true
I was given a certificate after completing the computer course.
a large amount of wealth
Shakespeare probably enjoyed fame and fortune during his career.
a person who writes plays
My grandfather was a playwright. He wrote many wonderful scripts when he was alive.
a play or movie with humorous characters and plot
Is this movie a comedy or a musical?
a play that is serious and has a sad ending
It was a tragedy that she died so young.
great in amount or degree
They paid a considerable amount of money for that car.
more than usual or more than other things
I like Mexican food, especially tacos.
the uncontrolled natural areas that are far from towns
There are thousands of American alligators living in the wild.
threatened with complete loss; as in a species
Unfortunately, the Chinese alligator is endangered.
not common or usual
Blue-eyed Chinese people are very rare.
the act of reducing the amount of something
Local farmers do not really care that they are depleting the species’ habitat.
something that annoys or causes problems
Chinese alligators are a(n) nuisance to farmers.
the air, water, land, and other elements that make up our world
We need to take care of the environment.
a way of life, including the beliefs, art, and music of a group of people
Japanese culture is very different from that in the West.
the process of a species dying out
How can we save some species from extinction?
to produce or to raise animals or plants
The Chinese government started a(n) breeding program for alligators.
imprisoned or enclosed
The captive wolf howled all night long.
the degree to which something is able to be found and used
The limited availability of a product increases its demand.
easy, simple, not difficult to do or accomplish
Installation was simple and uncomplicated.
far away from others
He lives in a(n) remote area that you can only reach by boat.
a person who sells things
The vendors at the market sell all sorts of things.
growth to a global scale; the increase of trade worldwide
Nations working together for the common good promotes globalization.
people living in an area who share rules and customs
A(n) society must establish rules and laws to maintain order.
a danger or risk of harm
The forest fire is a great threat to the animals.
together as a group
More countries around the world work together to achieve collective goals.
a failure to understand the feelings of others
We finally lost touch after she moved to Jeju.
harmful, not in the best interest of
The injury is detrimental to your health if you don’t try to fix it.
detachment; a lack of attachment
Water disconnection affects the entire family.
to join a group or organization
I signed up for French classes. Do you want to join the class too?
a person who pays regularly for a service
It had nearly a quarter of a million subscribers only a year after it started.
able to change easily
My work schedule is flexible, not nine-to-five.
to start something new, like a service or a product
Netflix never launched its own streaming device.
a machine or small object that does something special
The hospital bought a new device for measuring blood sugar.
to play music or a video from the Internet
Netflix never launched its own streaming device.
to change for different situations
They are adapting the book into a screenplay for a movie.
a set of rules for doing calculations, especially rules that a computer uses
An algorithm is a series of mathematical steps, especially in a computer program.
something you do regularly, and usually without thinking
She has good study habits. She always does her homework after school.
to be right for a person; to match
Your new shirt really suits you. It looks great on you.
to attract; to interest
Reality TV shows have a lot of appeal to audiences.
the space between two places or points
What is the distance from your home to your school?
to cause a change; to influence
The speed of sound is not affected by temperature.
how hot or cold something is
The temperature in the desert is very high during the day.
a scientific procedure done to test an idea
We can find the speed of sound by doing a(n) experiment.
to include or contain as a part of
Some role-playing games involve the use of dice and maps.
to obtain the quantity of something based on standard units
How can we measure the speed of sound?
a reflected sound
Listen to the echo bounce off the canyon walls.
a siren-like instrument to warn ships about obstacles in fog
A ship caught in a fog can avoid crashing into cliffs by sounding a foghorn and waiting for the echo.
a loud boom heard from the sky after a flash of lightning
You can hear thunder shortly after lightning strikes.
to hit together in a way that makes a loud noise
The beaver’s tail made a loud clap when it slammed into the water.
to work out, or find an answer, using mathematics
I calculated how much money I would need to buy the car.
the letters that make up a given language
ABC is the beginning of the English alphabet.
the fifth letter of the Greek alphabet
We still use some of the Greek letters, such as alpha, beta, gamma, and epsilon.
something which existed first and led to later developments
Saying is the precursor to doing.
a society with social organization and culture
Chinese civilization began thousands of years ago.
something that is learned or studied
How many lessons do you have to go to today?
a person who guides a craft to keep it on course
The job of navigator is important on a ship because they study how to know which direction to go.
a person who trades, such as a merchant or salesperson
The ancient trader went from city to city selling his goods.
a particular system of writing
You should memorize the script so that you can perform well on stage.
a thing used to represent something else
Five rings are the symbol of the Olympic Games.
having the ability to control people or things
I think the president is the most powerful person in the country.
to make or take as one’s own
We decided to adopt a new plan.
relating to sight, or vision
A wolf showing its teeth is a(n) visual sign that others should not go near it.
relating to sound and hearing
Listening to educational talks is good for auditory learners.
relating to touch and feeling
When you're blind, you have the tactile memory for things.
relating to the use or inclusion of chemistry or chemicals
Some chemicals will explode if you mix them together.
a color or shape (on an animal) used to communicate
An animal’s “badge” is what the animal looks like.
to appeal to another by stimulating their emotions or interest
How do birds attract one another?
to tell others of incoming danger
A lion will warn others to stay away by growling.
to entertain by singing, acting, or dancing; to do a procedure
Megan will perform in the school play.
an animal that kills and eats other animals predators are animals that hunt and eat other animals.
a status of having more power or importance than others
Large gorillas hit their chests to express their dominance over others.
feelings of love or fondness
Cats show affection by rubbing against the people they like.
able to be passed on to other people
AIDS and SARS are communicable diseases.
to send, share, or spread
At first, SARS was only transmitted from one bird to another, but then it began to infect humans.
relating to the body
You should avoid physical contact with infected people.
to expose and affect with disease
Person can be infected by AIDS through blood and bodily fluids.
an organism that lives on or in another organism and relies on that other organism for food
You can get a parasite from drinking contaminated water.
a living thing
A bacteria is a single-celled organism that can cause disease.
a problem caused by disease affecting a very large number of people in many places
The AIDS virus epidemic causes millions of deaths every year.
diseased or dirty
You can get a parasite from drinking contaminated water.
easily spread from person or animal to others
SARS is very contagious, so an epidemic could start easily.
matter expelled by an animal as waste
We can catch certain diseases by handling the excreta of animals.
Some diseases cause respiratory illness.
to greatly surprise
This amazing discovery will astound people.
programmed to complete a task automatically
They are using an automated teller machine.
boring, and repetitive, and time-consuming
Her speech was both long and tedious.
an important discovery or advancement
Scientists are always looking for new breakthroughs.
to write or create a work of art, such as music or poetry
A word is composed of several letters.
the same; unable to be differentiated
The copy is so good it’s indistinguishable from the original painting.
an artistic piece that has been created
The musician is known for her beautiful compositions.
the act of strengthening something reinforcement learning enables Aiva to compose music.
to look for; to try to find
We sought out unknown actors for our last movie.
a group of musical notes arranged into a piece of music
He wrote a wonderful melody for the song.
an ability to achieve success in something
Danny has the potential to become a professional swimmer.
separate from others; alone
The family lived in an isolated farm outside of town.
a person who travels to new and unknown places
Marco Polo was a famous explorer.
to live in or dwell
The island has been inhabited by Polynesians since about 300 CE.
a native or inhabitant of Polynesia
The polynesians on Easter Island probably don’t follow old traditions.
a three-dimensional piece of art, carved in a solid material to represent something else
The museum has many impressive statues on display.
to cut into the surface of an object
The stone figures were probably carved between 1000 and 1600 CE.
belonging to a very simple society; lacking modern technology
Stone tools are considered one of the most primitive human inventions.
small in number or amount and spread out
Water is very sparse in the desert.
the character of a person; who one is
The Statue of Liberty is part of America’s identity.
extremely good, impressive, or beautiful
The Great Wall of China is magnificent.
to strongly interest
People from all over the world are fascinated by these magnificent statues.
the process of building something such as a house or buildings
The new road is still under construction.
able to develop a positive cash flow
Professional soccer is a(n) profitable business.
the act of clearing forests
When forest areas become smaller and smaller, it’s called deforestation.
to vanish from sight; to go away quickly
The magician made the coin disappear.
to soak up or take in
Rainforests produce much of the earth’s oxygen and absorb carbon dioxide (CO2), a greenhouse gas.
to stop something from happening
How can I prevent getting sick from the common cold?
the layer of air and other gases around the planet
Volcanic eruptions send a lot of CO2 up into the atmosphere.
the relationships between plants, animals, and people
It is important to carefully monitor the ecology to ensure rare species can survive.
relying on someone or something for help
Most animal species are dependent on certain plants or animals for their survival.
the act of making new after a time of deadness
When a lizard loses its tail and then grows it back, this is an example of regeneration.
to become smaller in amount or size
His new shirt shrunk after he washed and dried it.
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