题目

Rather than________ out for a walk, he prefers________ at home sleeping. A. to go; to stay              B. go; stay C. go; to stay                D. to go; stay 答案：C [本题考查“prefer to do sth rather than do sth”]在△ABC中，角A，B，C的对边分别为a，b，c，且．（1）求角C的大小；（2）如果a+b=6，=4，求c的值．