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Sperm Whale | Killer Whale | |
Length | 15 metres | 8 metres |
Weight | 35 tons | 3600kg |
Teeth | 50, each up to 20 cm long | 40, each up to 20 cm long |
Tail | 8 metres long can dive into the deep cold water | 6 metres long Good swimmer, can jump out of water |
Skills | Sperm Whale | Killer Whale |
| A．A sperm whale. | B．A killer whale. | C．A fish. |
| A．35 tons. | B．3600 kg. | C．3500 kg. |
| A．Fourteen. | B．Twenty. | C．Forty. |
| A．Dance on the water. |
| B．Dive into the deep cold water. |
| C．Jump out of water. |
| A．thinner | B．smaller | C．heavier |
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
