语法与词汇Project Head Start, which was inaugurated in the UnitedStates in 1965, is a federally funded preschool programfor economically and culturally disadvantaged children.
语法与词汇The Harpers Ferry raid only helped to deepen the chasmbetween the two sides in the American Civil War.
语法与词汇The initial appearance of the silver three-cent piececoincided with the first issue of three-cent stamps in1851.
语法与词汇The invention of the thermometer is attributed toGalileo.
语法与词汇Lord Byron’ s eccentric habits alienated many of hiscountrymen.
语法与词汇It is disputable how far down in the animal serieslymphoid tissue is found.
语法与词汇Astronauts are subjected to the most rigorous trainingthat has ever been devised for human beings.
语法与词汇According to the 1966 Supreme Court decision Mirandav. Arizona, a police officer is obligated, before makingan arrest, to inform the suspect of his or her rights.
语法与词汇Stars are composed of intensely hot gases and derivetheir energy from nuclear reactions occurring in theinteriors.
语法与词汇As a person ages, small changes can occur in the eyeswithout adversely affecting vision.
语法与词汇Chicago’ s O’ Hare International Airport accommodatesforty-four million passengers per year.
语法与词汇周期的；定期的。After its founding, the United States governmentfollowed a policy explicitly designed to aid national
语法与词汇Industrial self-sufficiency in the United Statesdeveloped simultaneously with the mass production oftextiles in New England.
语法与词汇A Labor Department study states that the numbers ofwomen employed outside the home grew by more than athirty-five percent increase in the past decade andaccounted for more than sixty-two percent of the totalgrowth in the civilian work force.
语法与词汇During the 300 years between its introduction intomedicine and World War I, quinine was the only effectiveremedy for malaria.
语法与词汇In the past few years, significant changes have takenplace in the organization of our economy that willprofoundly affect the character of our labor unions aswell as influencing consumer and industrial life.
语法与词汇Since speech is such a familiar activity, it is oftenregarded as a universal endowment.
语法与词汇Because of its old mannerisms, the praying mantis hasalways intrigued human beings.
语法与词汇Regional planning deals with proposals concerningoutlying communities and highways as well as with urbanaffairs.
语法与词汇Jean Carpeaux’ s works expressed a rhythm and varietythat were not in accord with his contemporaries.