搜索
Big Ben is not the name of a man. It is the name of a clock. It is in London. London is the capital of the U.K. The big clock has four faces. You can read the time on the four faces of Big Ben. The minute hand is about four metres long. The big clock makes very loud sounds “Ding -dong, ding -dong”! The clock strikes every fifteen minutes.
1．Big Ben is the name of a clock.2．Big Ben is in the U.K.
3．The big clock has two faces. You can read the time on the two faces of Big Ben.
4．The minute hand is very long.
5．The clock strikes every two hours.
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
