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People in the office usually sit for most of the day when they work. But this is bad for a person’s health. When people sit for too long every day, they don’t move very much. So it is easy to start getting fat. Sitting too long is also bad for their work because it makes them want to sleep. When this happens, people may make more mistakes in their work or spend more time finishing their work. Companies need workers to be healthy, so how do they fix the problem?
Some companies have different types of desks to help their workers. The first type of desk is the standing desk. The desk can be taller when a person wants to stand. It can also be shorter when the person wants to sit. Another type of desk is the walking desk. This desk is made so that a person can work while walking at the same time.
Workers in the companies like the different types of desks very much. They think these desks are quite useful.
1．When people in the office work, they usually ________.| A．sit | B．move | C．run | D．sing |
| A．Cause. | B．Solve. | C．Bring. | D．Discuss. |
| A．2. | B．3. | C．4. | D．5. |
| A．They are cheap. | B．They are traditional. | C．They are useful. | D．They are expensive. |
| A．tell us the reasons for sitting | B．show the advantages of standing |
| C．introduce desks that help people work better | D．compare companies that provide different jobs |
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
