Metode penelitian yang digunakan dalam penelitian ini adalah descriptive kuantitatif. Object pada penelitian ini adalah reading question items. Teknik pengumpulan data yang digunakan dalam penelitian ini adalah documentary study. Data yang telah terkumpul, lalu dianalisis dengan menggunakan versi revisi dari bloom opinion pada ranah kognitif. Hasil dari penelitian ini ditemukan bahwa komposisi dimensi kognitif pada soal-soal pada bagian membaca dibuku kelas dua belas terbitan Erlangga bervariasi mulai dari Ingatan, Pemahaman, Penerapan, Analisis, Evaluasi dan Mencipta dengan presentasi berurut sebesar 51,91%; 35,88%; 12,21%, 0,00%;0,00%; 0,00%. Berdasarkan penelitian ini, disimpulkan bahwa question items of reading parts pada buku terbitan Erlangga kelas dua belas masuk pada kategori low order thinking skill.

This research was descriptive quantitative research. Objective of this research was to describe level of critical thinking of the question items in reading parts of the English textbook for twelfth senior high school published by Erlangga on a revised version of bloom taxonomy in cognitive domain. The research design of the research was descriptive quantitative. The research object of the research was question items in reading parts of the English textbook for twelfth senior high school published by Erlangga. Technique of collecting data of the research was documentary study. After collecting the data, the researcher analyzed it by using a revise version of bloom taxonomy in cognitive domain. The results of the research shown there were variety of composition of the cognitive domain of the question items of reading part in English textbook twelfth grade published by Erlangga based on a revised version of bloom taxonomy in cognitive domain. They were remembering, Understanding, Applying, Analyzing Evaluating, and Creating with sequential percentage of 51,91%; 35,88%; 12,21%, 0,00%;0,00%; 0,00%. Based on result of the research, the researcher concluded that question items of reading parts in English textbook twelfth grade published by Erlangga belong to low order thinking skill (LOTS) category.