单项选择题

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单项选择题
A. The invention of primitive weapons and language. B. The invention of language and the discovery of fire. C. The invention of primitive weapons and the discovery of fire. D. The invention of primitive weapons and the development of human brain.
A. The invention of primitive weapons and language.
B. The invention of language and the discovery of fire.
C. The invention of primitive weapons and the discovery of fire.
D. The invention of primitive weapons and the development of human brain.
单项选择题
A. Climbed the trees along the coast. B. Played on the sands by the sea with other children. C. Went boating by the sea. D. Made trains or cars out of the sand.
A. Climbed the trees along the coast.
B. Played on the sands by the sea with other children.
C. Went boating by the sea.
D. Made trains or cars out of the sand.
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