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One day, Cao Cao led an army(军队) to attack(攻打) Zhang Xiu. It was summer. The weather was very hot. The soldiers were thirsty. Seeing this, Cao Cao was very anxious. Then he looked back at the soldiers. They were too thirsty to bear. Cao Cao suddenly had an idea. He shouted, “There is a large piece of plum orchard(梅林) not far away from the front. ” Hearing this, the soldiers hurried up to move(前进) forward.
At last, they found water.
1．It was summer. The weather was very hot.
2．The soldiers were hungry.
3．Cao Cao was very anxious.
4．There is a large piece of plum orchard(梅林) not far away from the front.
5．At last, they didn’t find water.
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
