Let me answer "imaginary number", because the distance from the eyes to the glasses is less than twice the focal length, so you can't image on the screen, which produces an imaginary number, and the number is naturally imaginary.

Well, I admit that primary school students can't get into this exam, so I personally think it's a close number.

8 rule out first, because the original question asked a number of "species" rather than a number;

Algebraic reasons are the same as above;

"Number with glasses" is a phrase with "number" as the subject, indicating that the focus is on the number itself rather than the glasses, and the degree is biased towards the physical object of the glasses, that is, the adverbial that modifies the subject number, rather than the real focus of the phrase and the degree of exclusion.

Proximity number is mainly a number, and myopia is only a modifier, which is consistent with the riddle, not its variant: number wears glasses-that is, if the answer is degree, then the closer question should be a verb-object phrase, with glasses as the main description object.

The above is my personal opinion.