There are three cases where students struggle with Japanese-language questions, and one of them is a lack of fast-reading ability.
Literal
Japanese-language [attributive-の] questions [subject-が] cannot-do [called-という] case [topic-には] 3-[counter-つ] exist-[ren'yōkei-あり], one [topic-は] fast-reading-ability [subject-が] not-exist [called-という] thing is-[polite-です].
Explanatory prose about study habits. ~というケース ('cases/situations called X') nominalizes a descriptive clause. あり uses the ren'yōkei (masu-stem) of ある as a clause linker — written register. ~ということ ('the fact that X, the matter of X') is the abstract nominalizer. 国語 'Japanese language (as a school subject).' 速読力 ('fast-reading ability') is a compound.