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We cannot travel every path. Success must be won along one line.
1. I hate a thing done by halves. If it is right, do it bravely. If it is wrong, leave it undone. The men of history were not perpetually （无休止地） looking into the mirror to make sure of their own size. When they worked, they paid attention to nothing else and insisted on it. They did it so well that people around the world saw them to be great, and they called them great men.
To live with a high ideal （理想） is a successful life. 2. Whatever they do, they always try their best. That makes the man strong. They know that if they do not work with all their efforts, others will overtake （超越） them.
3. Success depends less and less on luck and chance. Continuous effort is the key to success.
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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
