题目

 In no country     Britain, as has been mentioned,      experience four seasons during the course of a single day. A. other than; one can                  B. apart from; one can C. other than; can one                 D. rather than; can one 答案：C一物体的质量为5kg，受到互成90°的两个力、的作用，，，这个物体产生的加速度是多大？