The stone chip is thought to be the most important tool because it ______.
A: was one of the first tools
B: developed human capabilities
C: led to the invention of machines
D: was crucial to the development of mankind
A: was one of the first tools
B: developed human capabilities
C: led to the invention of machines
D: was crucial to the development of mankind
举一反三
- It is the author's view that in human civilization, agriculture ______. A: is the most important step man has ever made B: is only less important than the domestication of animals C: and fire are of the same importance D: can be ranked in importance with the invention of machines
- America is one of the countries in the world. A: most develop B: most developing C: most developed D: most development
- Education is one of the most important _____________ in the development of a country.
- Human ingenuity was initially demonstrated in A: the use of machines to produce science fiction. B: the wide use of machines in manufacturing industry. C: the invention of tools for difficult and dangerous work. D: the elite's cunning tackling of dangerous and boring work.
- It is the author's view that in human civilization agriculture______. A: is the most important step man has ever made B: is only less important than the discovery of fire C: had long been practiced since 3000 B. C. D: can be ranked in importance with the invention of machines