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①Health is very important to everyone, different people have their own ways to keep fit. A lot of people like running on the treadmills (跑步机). But it is not a good way to make you strong and healthy. Here are some reasons why you should run outdoors but not on the treadmills.
②It costs you a lot of money to buy a treadmill. You can run outdoors, and it costs you nothing! Walk outside and the whole world is your treadmill. If you’re willing to get a little dirty, outdoor activities will help you.
③Treadmills can become boring. You are limited to what’s in front of you. Running and exercising outside provides a beautiful scenery. Studies have shown that just looking at photos of nature can lower blood pressure (血压), so imagine what running through it will do. The fresh air and the unpolluted nature will also make you run easier.
④You burn more calories running outside than you do on a treadmill, because you have to work harder in order to move your body. While you run on a treadmill, you only move your legs. However, when exercising outside, you must move your legs and your hands and so on.
⑤Why not go for a run outdoors? Come on!
1．The passage gives ________ reasons not to exercise on the treadmills.| A．1 | B．2 | C．3 | D．4 |
| A．cheap | B．expensive | C．famous | D．comfortable |
| A．Clean water. | B．Unpolluted nature. |
| C．Fresh air. | D．Beautiful scenery. |
A． | B． | C． | D． |
| A．Do more exercise. |
| B．How to do exercise on the treadmills. |
| C．Three reasons for not running on the treadmills. |
| D．Outdoor scenery. |
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
