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1. The ugly duckling looks __________ (into, in) the water.
2. I __________ (is, am) a beautiful swan!
3. He __________ (see, sees) two big swans.
4. The ugly duckling has __________ (no, not) home.
5. In winter, it is __________ (cold, hot).
6. He __________ (swim, swims) away.
7. The three yellow __________ (ducklings, duckling) play together.
8. The three yellow ducklings sit on __________ (she, her) back.
9. The big egg opens __________ (late, later).
10. Mother Duck __________ (sit, sits) on the eggs.
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
