Now more and more people are trying aquatic(水上的)exercise. More and more people in the US are i1. in it. People in other c2. are also doing aquatic exercise more frequently.
Aquatic exercise has many good points. First of all, it is e3. than exercising on land. Why? You weigh about 90% less in the pool. It is also better for your knees than r4. or walking.
Aquatic exercise feels easy, but it still bums calories(热量). Water is 1000 times thicker and heavier than air. In the same period of time, you can burn more calories in the pool than in the gym. That’s b5. it takes more energy to move in the water.
But what if you are a6. of the water? No problem! There is nothing to worry about. Aquatic exercise is safe and easy to learn. It doesn’t require any special skills. For most kinds of aquatic exercise, you don’t even need to know how to swim.
In fact, most people say they f7. more relaxed in the water. They stop thinking a8. the things that make them anxious. The cool and quiet environment makes them exercise more.
Aquatic exercise is suitable for everyone. You can do it at any age. It can even help people who are h9. in accidents. With aquatic exercise, they can move in ways they can’t on land.
So are you looking for a fun new way to i10. your health? Why not try? Join the millions of people who are burning calories while keeping cool in the pool.

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

