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1.例: they/in Class Four
--What class are they in? --They are in Class Four
( 1 ) she/in Class Three
( 2 )we/in Class Two
2. 例: you/the USA
--Are you from the USA? --Yes, I am.
( 1 ) she/the UK
( 2 ) Lily and Lucy/Canada
3. 例: we/Yunnan
--Where are you from? --We are from Yunnan.
( 1 ) Li Ming/Hunan
( 2 ) the
y/Beijing
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
