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（1）How can 10 and 3 make 1? ________________________________________
（2）Einstein（爱因斯坦）was born in __________.
A．Russia B．England C．America D．Germany
（3）Which stands for "英镑" ?
A．$ B.~ C．~ D．&
（4）Who invented （发明）paper in China?
A．Zhang Heng B．Sima Qian C．Li Bai D．Cai Lun
（5）How many people（人）in the world（世界）now?
About ___________ .
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
