英会話の上達ならeTOC、自宅にいながらマンツーマンで英会話

UNIT	LESSON	CODE NO
1	Are bats really blind?	Lesson 1
2	Why do we need trees?	Lesson 2
3	Are penguins clumsy?	Lesson 3
4	What are allergies?	Lesson 4
5	Why are skunks black and white?	Lesson 5
6	Do vampire bats drink blood?	Lesson 6
7	Are alligators really dinosaurs?	Lesson 7
8	Is the world too crowded?	Lesson 8
9	How big is Antartica?	Lesson 9
10	What is the rainforest of the sea?	Lesson 10
11	Are polar bears the largest bears?	Lesson 11
12	Do jellyfish really sting people?	Lesson 12
13	Can fish breath underwater?	Lesson 13
14	Are jellyish really fish?	Lesson 14
15	Why gray hair grows.	Lesson 15
16	Who travels with the U.S. president?	Lesson 16
17	Your muscular system	Lesson 17
18	The Nightcrawler	Lesson 18
19	What are leeches?	Lesson 19
20	Anatomy of an earthworm.	Lesson 20

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