266. At first he did not realize that he had succeeded in making a computer that ran on solar power(太阳能). “Realize” in the sentence means “___________”

266. At first he did not realize that he had succeeded in making a computer that ran on solar power(太阳能). “Realize” in the sentence means “___________”

A. understand           B. get to                     C. reach                   D. come true

266. At first he did not realize that he had succeeded in making a computer that ran on solar power(太阳能). “Realize” in the sentence means “___________”