Under the tree, there are four brothers. They are all blind. Here comes a man on an elephant. The brothers can hear the elephant, but they cannot see“. “What’s that?” asks one of the brothers. ‘‘It’s an elephant.” answers the man. “You can touch it. How does it feel?” The brothers all touch the elephant. “I know,” says one of the brothers, “The elephant is smooth and hard!” “No, it isn’t!” says another brother, “It’s big and thick.” “No. The elephant is big and soft,” says another brother. “No!” says the last (最后) brother, “The elephant is long and thin.”
1.Can the four brothers see the elephant?
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2.Do the brothers all touch the elephant?
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3.What does the first brother say about the elephant?
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4.What does the last brother say about the elephant?
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5.Are they right or wrong about the elephant?
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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

