From: Comparing the impacts of various inputs(I + 1 & I-1) on pre-intermediate EFL learners’ Reading comprehension and Reading motivation: the case of Ahvazi learners
Book levels
Word counts
CEFR levels
Starter
250
A1
Level 1
400
A1/A2
Level 2
700
A2/B1
Level 3
1000
B1
Level 4
1400
B1/B2
Level 5
1800
B2
Level 6
2500
B2/C1