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23 atom …… – N. a very small part of all things; the smallest part of an element that can join with parts of other elements
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29 admit ……– V. to accept (“admitted to the United Nations”); to express one’s guilt or responsibility (“He admitted that what he did was wrong.”)
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46 accuse …… – V. to say a person is responsible for an act or crime; to make a statement against someone
49 affect ……– V. to produce an effect on; to influence (“A lack of sleep affected the singer’s performance.”)
51 agency …… – N. an organization that is part of a larger group (“an agency of the United Nations”)
56 answer ……– N. a statement produced by a question; V. to make a statement after being asked a question
57 appeal ……– V. to take to a higher court, person or group for a decision; to call on somebody for help
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68 against – AD. opposed to; not agreeing with something
69 airport – N. a place where airplanes take off and land
70 alcohol – N. a strong, colorless liquid, usually made from grain, used in drinks or in industrial products
71 already – AD. before now; even now
72 anarchy – N. a lack of order; lawlessness
73 ancient – AD. very old; long ago
74 another – AD. one more; a different one
75 appoint – V. to name; to choose (“appoint a judge”)
76 approve – V. to agree with; to agree to support
77 attempt – V. to work toward something; to try; to make an effort
78 average – N. something (a number)representing the middle; AD. common; normal
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79 accident – N. something that happens by chance or mistake; an unplanned event
80 activist – N. one who seeks change through action
81 air force – N. a military organization using airplanes
82 airplane – N. a vehicle with wings that flies
83 although – CONJ. even if it is true that
84 ancestor – N. a family member from the past
85 announce – V. to make known publicly; to declare officially
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86 advertise – V. to show or present the qualities of a product to increase sales
87 apologize – V. to express regret for a mistake or accident for which one accepts responsibility
88 artillery – N. big guns
89 astronaut – N. a person who travels in space
90 astronomy – N. the scientific study of stars and the universe
91 attention – N. close or careful observing of, or listening to, someone or something (“The student paid attention to his teacher.”)
92 available – AD. present and ready for use; willing to serve or help. (“There was a list of available candidates.”)
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93 aggression – N. an attack against a person or country; the violation of a country’s borders
94 ambassador – N. a nation’s highest diplomatic representa-tive (to another government)
95 ammunition – N. the bullets or shells fired from guns
96 antibodies – N. special proteins produced in the blood that kill harmful bacteria
97 archeology – N. the scientific study of past human life and activities
98 atmosphere – N. the gases surrounding any star or planet
99 automobile – N. a vehicle with wheels used to carry people; a car
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100 agriculture – N. farming
101 anniversary – N. a yearly celebration or observance of an event that happened in the past
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102 administration – N. the executive part of a government, usually headed by a president or prime minister