在线common roots课程其他-中国考试

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apo, apho-away, off, separate; aphorism - a short expression of a general truth; apology - an explicit expression of regret, apostrophe - a small dash used in place of an omitted letter

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aqu/a-water; aquarium - a water container for fish; aquatic- relating to water; aqueduct - a pipeline for water

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arbor-tree; arborist - someone working with trees; arbor - a shady area formed by trees; arborous - having many trees

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arch/i-chief, most important, rule; archbishop - the highest ranking bishop; archenemy - chief or worst enemy; matriarch - a female who rules a group; monarch - a king or queen

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arch/a/i-primitive, ancient; archaeology - the study of ancient cultures; archaic - belonging to an earlier period; archive - a collection of historical materials

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arthr/o-joint; arthroscope - a tool to see inside a joint; arthritis - inflammation of a joint; arthropod - invertebrates with jointed legs, like spiders, crustaceans, insects

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art-skill; artifact - object made by a person's skill; artisan - a person skilled in a craft; artist - a person who creates skillfully

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astro,-star, stars, outer space; astronaut - a person traveling to the stars; astronomer - someone who studies the stars; asterisk - a star-shaped sign used as a reference tool

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aud/i/io-hear; audible - loud enough to be heard; audience - people who listen to a program; audiovisual - relating to sound and vision

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auto-self, same, one; autocrat - a person who governs with absolute power; autograph - a person's own signature; automatic - moving by itself

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avi/a-bird; aviary - a large enclosure for birds; aviatrix - a female airplane pilot; aviation - the art of designing or operating aircraft

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bar/o-pressure, weight; baric - pertaining to pressure, esp. of the atmosphere; milliard - metric unit, equal to 1/1000th of a bar; baryon - heavy elementary particle

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bell/i-war; bellicose - warlike; belligerent - hostile, ready to fight; rebel - person who opposes and fights

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bene-good, well; benefactor - person who gives money to a cause; beneficial - producing a good effect; benevolent - showing kindness or goodwill

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bi/n-two, twice, once in every two; biannual - happening twice a year; binoculars - optical device with two lenses; bilateral - of or involving two sides

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bibli/o-book; bibliography - a list of books used as sources; bibliomania - an extreme love of books; bibliophile - a person who loves books

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bio-life, living matter; biography- a life story written by another person; biology - the science of life; biosphere - Earth's surface inhabited by living things

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blast/o-cell, primitive, immature cell; blastula - an early stage of embryonic development; fibroblast - a cell that forms connective tissue; blastoderm - the layer surrounding the inside of an egg

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burs-pouch, purse; bursar- an administrative officer in charge of funds; bursary- the treasury of a college or monastery; disburse- to expend especially from a public fund

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calc-stone; calcite; calcium- the flame of acetylene gas generated by reaction of calcium carbide with water; calcification- impregnation with calcareous matter

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