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Africa is the home for many animals.You can find lions, elephants, giraffes, zebras, crocodiles and other animals in Africa.Many people travel to Africa just to see its animals .The zoos in Africa are different from the zoos in other parts（部分）of the world.They are open and they’re bigger.
（1）There are many big animals in Africa.
（2）You can find polar bears in Africa, because they’re big animals.
（3）People travel to Africa for its delicious food.
（4）Africa zoos are like the zoos in Asian countries.
（5）African zoos are very big.
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
