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Some inventions are very important. They make our life easy. Some inventions are just fun. Life is much more interesting with these inventions.
☆A flower singing pleasant ( 令人愉快的) songs
A company in Japan invented a kind of singing flower. You can listen to music that comes through real flowers. 1. Customers in restaurants can not only smell the beautiful roses, but also listen to pleasant music while eating. People in the dentist’s office can look at pretty lilies (百合花) and listen to Strauss while having their teeth examined!
☆A cup keeping the temperature
Drinking hot coffee may cause burns sometimes. Luckily, a company has invented a kind of cup that can keep water from being too hot or too cold. This cup can allow you to choose your comfortable temperature. 2. You can even connect it to your phone to know about the temperature. It’s really amazing.
Do you have your own ideas about inventions now?
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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
