It is no use trying to talk him into studying hard; he can only be by force.A. upsetB. ha

问题补充：

It is no use trying to talk him into studying hard; he can only be by force.

A. upset

B. harmed

C. rescued

D. persuaded

答案：

A. upset

B. harmed

C. rescued

(答案→)D. persuaded

解析：A. upset使…不安，B. harmed伤害 ，C. rescued 救援，D. persuaded说服，句意：试图说服他努力学习没有用，他只能强迫才能说服。选D。