understanding of paragraph

General English Module, page : 74
Exercise 4
1.a => too general
b => the topic
c => too specific

2.a => too general
b => too specific
c => the topic

3.a => the topic
b => too specific
c => too general

General English Module, page : 75
Exercise 5

1. Lightning
2. Three kinds of clouds

General English Module, page : 76
Exercise 6

1. How people in the United States get their drinking water
2. Water problems in the United States
3. Some ways you can use less water

General English Module, page : 77
Exercise 7

1. Galileo Galilei
2. Galileo’s study of how things fall
3. Galileo got a trouble

General English Module, page : 78
Exercise 8

1. How to make tea
2. How Europeans like coffee, line 4
3. Orange juice is popular drinks in the US, line 4