The title of the college entrance examination 1+ 1 is 1977. 1977 college entrance examination questions 1+ 1 equals several. Even the math problems that can be answered correctly in the first grade of primary school, some candidates did not give the answer. Maybe they want to know how such a simple math problem can appear in the college entrance examination paper. So there is no answer, and some candidates answer wrong. The types of errors are also strange and puzzling.