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Edison was born in 1847 in America. He was a clever boy. He loved reading and making things. When he was little, he always asked questions. His teacher didn’t want to teach him. Then his mother took him home and taught him by herself. When he grew up, he invented so many things. In 1880, he invented the electric light(电灯). It is one of the most useful things in the world. He was welcomed by all the world.
1．Edison was English. （2．Edison’s teacher liked him very much. （
3．Edison’s mother was his teacher. （
4．The electric light is one of Edison’s inventions(发明物). （
5．Edison is famous in the world. （
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
