Remember to take a breath of fresh air and have some exercise each day. It will make dif

问题补充：

Remember to take a breath of fresh air and have some exercise each day. It will make difference.

A. /；a

B. the；a

C. /；the

D. a；the

答案：

(答案→)A. /；a

B. the；a

C. /；the

D. a；the

解析：考查冠词。不可数名词前不加冠词，不定冠词a/an修饰可数名词，表泛指，意为“一个，某个”；定冠词the表特指，意为“这个，那个”。air不可数，breathe fresh air呼吸新鲜空气；make a dofference产生影响，是固定搭配。故选A。