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16 March 2018 1． (Sunny/ June)
Last Saturday, we went to work on a 2． (farm/ school). We wore school clothes. Mr Li 3． (were/ was) in an old coat. He 4． (looks/ looked) funny. It was 9 am 5． (and/ but) we got there. Then we began to help the farmer 6． (do/ make) farm work. Some of us 7． (picked/ drank) apples and the others carried the baskets. We worked 8． (hard/ lovely). We 9． (were/ was) tired at last. But we felt very 10． (boring/ happy).
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
