If full credits were given to this part it could______a high grade for the student in his physical course.
【正确答案】 D
【答案解析】各项的意思是：belong to属于；是(某团体、国家等的)成员；be due to由于；应归于；be subject to受支配，从属于，常遭受；eontribute to有助于，贡献。根据句意判断，答案为D。