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increase v. 增加；增大
Indian adj. 印度的 n. 印度人
Atlantic n.&adj. 大西洋（的）
Arctic adj. 北极的
Learn some new words
1. What is the problem the earth faces?
2. People can live on the seven continents. ( ) (判断正误)
3. How much of the world is covered with land?
4. What is largest part of the ocean ?
The population is increasing very quickly.
F
One third .
The Pacific Ocean.
Listen to the passage and then answer the questions.
Let’s Do It!
Read the lesson and match each paragraph with its main idea.
Paragraph1
a. Six of the seven continents are good for people to
live on.
Paragraph2
b. We should treat the earth well.
Paragraph3
c. An increasing population is a big problem for the earth.
Paragraph4
d. Two thirds of the earth is covered with oceans.
Paragraph5
e. People cannot live everywhere on the earth.
Fill in the blanks with the correct forms of the words in the box.
increase dry surface billion total
1. The number of swimmers here is _________ quickly because it’s very hot these days.