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（1）The apples are （ 跌落下）the stairs.
（2） （ 有 ）2500 students at the school now.
（3）The bags are too （重的）. I can’t （提、抬）them.
（4）First we’re going to walk （在……周围）the lake.
（5）Yang Liwei made a （录像）. It’s about the space （旅行）.
（6）Let’s go under the tree. It’s （干的）there.
（7）She was （瞎的）. And she was （聋的）.
（8）English is （有用的）. But it’s easy to make （错误）.
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
