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North America
South America
Australia
Antarctica
Oceans cover two thirds of the earth’s surface
Two thirds of the earth’s surface is covered with oceans.
The world’s population is increasing very quickly.
In the year 2010 ,the population was over 7 billion in total.
What problems does it face?
1. The world’s population is increasing very quickly. By 2050, the population of the world may reach ________.
2.Parts of this land are very dry. These dry places __________deserts. It’s hard for people to live there.
3. The earth has seven continents and one big ocean. The Pacific Ocean is ____________ one of the four different parts of the big ocean.
9 billion
are called
the largest
Paragraph1 a. Six of the seven continents
are good for people to live on.
paragraph 2 b. We should treat the earth well.
Paragraph 3 c. An increasing population is a
big problem for the earth.
Paragraph 4 d. Two thirds of the earth is
covered with ocesns.
Paragraph 5 e. People cannot live everywhere
on the earth.
Reading
1. It is easy to live in all places on the earth.(T/F)
2. People can live on every continent _______ Antarctica.
3. What places can’t people live on the earth?
4.How large are the oceans?
5. The earth must be treated well for our children and our children’s children.(Translate)