( ) 1. You could be in the EA condition when
( ) 2. What can we learn from the studies mentioned in the passage?
( ) 3. What does the last paragraph mainly tell us?
( ) 4. What is the writer's main purpose in writing this passage?
A
.( ) 2. What can we learn from the studies mentioned in the passage?
B
( ) 3. What does the last paragraph mainly tell us?
B
( ) 4. What is the writer's main purpose in writing this passage?
C
答案：1. A
2. B
3. B
4. C
2. B
3. B
4. C