Reading for Speed and Fluency-Book 1 Unit 23 (E)

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세트공유

Antarctica

the continent that contains the South Pole
antarctica is the southern most continent.

billion

the number 1000 000 000 in America and 1 000 000 000 000 in Britain
I wish I had a billion dollars in my bank.

bounce off

to be deflected off something
Sound bounces off objects so that they can be heard.

degree

a measure of progress or importance

environment

all the things that affect the health, growth or progress of something
This natural environment is often described as a green world.

impossible

something that can't be done, not able to happen
Many people thought that landing men on the moon would be impossible.

in order to

as a means to
You have to do your best in order to succeed.

planet

a massive round object in space which moves around a star
Pluto is no longer considered a planet in our solar system.

serious

being dangerous or having a potentially negative effect
This is a very serious thing.

shade

an area in which sunlight has been blocked
It is cooler if you sit in the shade of the tree.