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It’s Friday evening. The Chens are at home. They’re busy. They’re getting ready for tomorrow’s picnic. Mr Chen needs some Cokes. He likes Cokes. Mrs Chen needs some orange juice and some bread. Eddie needs a kite. He likes to fly a kite in the park. Wendy needs some sandwiches. Grandpa and Grandma need some bananas.
1．Today is Friday. （2．The Chens are having a picnic. （
3．Mrs Chen needs some Cokes. （
4．Eddie wants to fly a kite tomorrow. （
5．Grandpa needs some bananas. （
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
