8. Rapid reading means reading something fast just to __________ the general idea.
A. master B. seize C. grasp D. imagine
9. They build strong walls round the town as a __________ against the enemy.
A. defense B. defend C. defeat D. depend
10. Who ___________ the workers to take up the struggle?
A. called for B. called in C. called on D. called off
练习答案：1-10 BAACB AACAC