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（1）What’s the next number?
34050 53045 72040 _________
A.91035 B.8630 C.9234 D.8153
（2）How long does an elephant live?
_________ years.
A.100—90 B.80—75 C.50—40 D.30—20
（3）How many is a dozen（一打）? _________
A.20 B.12 C.10 D.8
（4）A—F stand for（代表）the number 0—5
A="_________" B="_________" C=_________
D="_________" E="_________" F=_________
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
