语法与词汇Neon, a chemical element---------up about one part per 65000 in Earth’s atmosphere, is a colourless, odourless gas.
语法与词汇Recently archaeologists have strived (to develop) theories, (based on) archaeological (evident), that (explain) societal changes such as the development of farming.
语法与词汇Cholesterol is present in large quantities in the nervous system, where ____ compound of myelin.
语法与词汇The poet MM spent several years ___ school in CP.
语法与词汇In addition to ____a place where business deals are made, a stock exchange collects statistics, publishes prices quotations, and sets rules and standards for trading.
语法与词汇The stethoscope transmits and amplifies sounds from localized areas of the body, thus making them -------to hear and identify
语法与词汇Managers often receive considerable training in tile "technical" aspects of their jobs ______ very little in the "people nanagement" aspects.
语法与词汇Among the 450 artworks in the White House art collection___________.
语法与词汇In 1989 Carret Hongo was chosen as ______ for the Pulitzer Prize in poetry.
语法与词汇Geothermal energy is a potentially inexhaustible energy source ______been tapped by humans for centuries but,until recent years,only on a small scale.
(A)
语法与词汇In tile philosophical school of pragmatism, -----certainty and there are no absolutes.
语法与词汇From the archeologist''s perspective, understanding the past is vitally important and requires __________ of earlier cultures.
语法与词汇Sea horses (usually) live along the shore among seaweed and (other) plants to which they (cling) to by (their tails).
语法与词汇----- they rely on external sources of warmth, amphibians in cool regions hibernate through theWinter
语法与词汇________. widely used in the chemical industry, sodium carbonate is principally consumed by the glass industry.
语法与词汇Acoustics, (the) study of sounds, (is) one of the (oldest) of the (physically) sciences.
语法与词汇Chrom...s vary in size and shape and usually ___ in pairs.
语法与词汇Monarch butterflies (gather) in flocks in (late) summer and fall and (then) migrate (southern).
语法与词汇"We walked twenty miles today.""I never guessed you could have walked _____ ".