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There are many kangaroos in Australia and they are not only in zoos. You can see them everywhere outside the cities and towns. Kangaroos have very strong legs, so they can jump very far. Their tails are very strong too. So when they want to have a rest (休息), they rest on their tails. Kangaroos are also good at looking after their babies. Mother kangaroos keep their babies safe in their pockets (袋子). They eat grass and leaves. They also like eating roots and some plants. Baby kangaroos stay in their mother's pocket for 5-6 months.
1．You can see kangaroos anywhere in the world.2．kangaroos are good at jumping.
3．Kangaroos rest on their legs.
4．Mother kangaroos keep their babies for about five weeks.
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
