Расположите пропущенные предложения в таком порядке чтобы получился связный текст Blind people or pe...: ответ на тест 605268 - Английский язык

Расположите пропущенные предложения в таком порядке, чтобы получился связный текст
Blind people or people who cannot see well often use a cane to feel their way when walking. The Ultracane is a new type of cane which helps blind people to avoid obstacles in their part. It uses echo-location, like a bat, to detect objects around the blind person. 1 _______. The cane transmits ultrasound signals. 2 _______. Sensors on the cane receive the reflected signals which are passed to a microprocessor which calculates the position and size of the object.
There are four buttons on the handle of the cane – the two which are for objects in front and overhead are on the top, and the two which are for objects on the left and right are on the back. These buttons vibrate when an object is detected. 3 _______.
People who have tried the cane say that with a little practice they can use these vibrations to make a mental map of their surroundings as they walk. Because the cane uses vibrations, not noise, they can also use their ears for additional information about their surroundings. 4 _______.