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【简答题】
“一平三端”智慧教学系统三大特点是什么?
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皮皮学刷刷变学霸
举一反三
【单选题】In the earliest stages of man’s development he had no more need of money than animals have. He was content with very simple forms of shelter from natural materials around him. he made his own rough to...
A.
Man needed little in the earliest stages of development
B.
Man preferred to make tools by himself.
C.
How the simple process of exchange arose.
D.
What the early man needed from others
【简答题】1 device 2 instrument 3 implement Man’s earliest s were carved from stone and bone.
【单选题】Man’s earliest _______ were carved from stone and bone.
A.
device
B.
instruments
C.
implement
【简答题】 f____ n. 肥料
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