Robert Louis Stevenson · 1850
Heavy going at CET-4 level. Not unreadable — just not readable the look-every-word-up way.
Coverage = the share of words in the text you already know. The research gives two lines: 98% before independent fluent reading is realistic, 95% for the instructional level that needs support (Hu & Nation, 2000). Proper nouns are not counted as unknown — recognising that it is a name is enough; this book has 426 of them.
Advanced — read it with glosses. 81,894 words in total; at 150 words a minute for a non-native reader, about 9 h 6 min to finish. Average sentence length 20.1 words. Reaching 95% coverage on this book (the floor for readability) takes roughly 16,500 word families.
The opening of Kidnapped, word for word. Tap any word you don't know and its meaning here appears beside it — no sign-up, tap as often as you like.
I will begin the story of my adventures with a certain morning early in the month of June, the year of grace 1751, when I took the key for the last time out of the door of my father’s house. The sun began to shine upon the summit of the hills as I went down the road; and by the time I had come as far as the manse, the blackbirds were whistling in the garden lilacs, and the mist that hung around the valley in the time of the dawn was beginning to arise and die away.
Mr. Campbell, the minister of Essendean, was waiting for me by the garden gate, good man! He asked me if I had breakfasted; and hearing that I lacked for nothing, he took my hand in both of his and clapped it kindly under his arm.
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Ordered by unknown words per 100. Lower reads easier; to step up a level, pick a higher number.
Computed by Readii from the public-domain text (updated 2026-10-21), not estimated by hand. The Readii reading level is our own scale, anchored on unknown-word density; it is not the same system as Lexile or AR and does not convert directly. Unknown words are measured against the CET-4 ∪ Gaokao lists, so this is difficulty for a Chinese-speaking learner, not a native-child reading level.