1) When was Einstein born? a) 1987 b) 1897 c) 1789 d) 1879 2) He was.... a) cook b) physicist c) painter d) engineer 3) He was born in a) Germany b) America c) France d) Switzerland 4) What was the greatest invetion made by him? a) paper b) car c) photoelectric effect d) phone, and other devices 

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?