TOEFL Reading Fill in the Missing Letters #006 — Reading the Rings of a Tree

Free TOEFL 2026 Reading practice for the new Fill in the Missing Letters question type (Upper level): one short academic paragraph, 10 words with half their letters removed, instant checking.

How to practice: This is the new TOEFL 2026 Reading task Fill in the Missing Letters. One short academic paragraph has 10 incomplete words. The first half of each word is given; type the letters that are missing. Context, grammar, and word endings matter as much as spelling, so read the whole sentence before you type. Press CHECK when you are done.
3:00remaining

Fill in the missing letters in the paragraph.

Type the missing letters. Use Backspace to remove a letter and move back.

Each year a tree adds a ring of new wood, and the width of that ring refl the conditions of the growing season. Wet years produce wide rings; drought years produce narrow ones. Because the pat is the same for every tree in a region, overlapping samples can be mat against one another, extending the record far beyond the life of any single tree. This technique, called dendroc, allows archaeologists to date wooden beams to the exact year they were c. It also gives climate scientists an annual rec of rainfall that predates written obser. The method fails, however, where seasons are not clearly sepa, since a tree that grows year-round produces no distinct bound.

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