(A)

A smart wheelchair is a modern machine designed to help people who can't move or walk around freely. Unlike traditional wheelchairs, smart wheelchairs use advanced technology to make them easier and safer to use. One of the key features of the smart wheelchair is its ability to navigate itself. It uses sensors and cameras to notice and avoid barriers. This means the user does not have to worry about bumping into things or getting stuck.

(B)

Smart wheelchair users love the fact that they can use their voice to tell the wheelchair what to do. For example, they can say "move forward" or "turn left", and the wheelchair will do it. Voice control was originally designed for people who have difficulty using their hands. Smart wheelchairs were in use at the time, so the inventors decided to include it in all smart wheelchairs. This technology helps the users by allowing them to use the wheelchairs without using their hands.

(C)

Smart wheelchairs also come with GPS technology. This allows users to find their way around unfamiliar places. If they get lost, the wheelchair can guide them back to a safe place. Some models even have internet connectivity, so users can use maps and other online resources. GPS technology is particularly useful for outdoor use, helping users navigate through cities or parks. It ensures that users can travel with confidence, knowing that they can always find their way back.

(D)

Smart wheelchairs are designed to be comfortable. They have seats that can be raised or lowered according to the user's height. Some models even have built-in massage functions to help the user relax during long journeys. For safety reasons, this function requires the wheelchair to be stopped. The ergonomic design helps to prevent the parts of the wheelchair from causing skin problems and other discomfort associated with long periods of sitting.

(E)

Although smart wheelchairs have many advantages, they also have some disadvantages. Many people can't afford them because of the high cost of the equipment and updates, which can be expensive and time-consuming. Smart wheelchairs can also be difficult to use in noisy environments. Voice control may not work well in noisy environments, as the wheelchair may not recognise words correctly. Special equipment is needed in such cases.

In 1961, Dr John Lilly's book, Man and Dolphin, paid attention to the theory that dolphins wanted to (and probably could) communicate with humans. Lilly's writings led to a scientific interest in inter-species communication. Frank Drake helped Doctor Lilly get money from NASA and other government institutions to realise his vision of a communicative bridge between humans and dolphins.

Later, John Lilly built a laboratory called "Dolphin Point", with a work area upstairs and a dolphin pool downstairs. When 23-year-old Margaret Howe Lovatt found out that the lab existed, she went there just out of interest. She remembered stories from her youth in which talking animals were some of her favourite characters. She had hoped to see those stories come to life.

Arriving at the lab, Lovatt met its director, Gregory Bateson. Bateson allowed Lovatt to watch the dolphins. Perhaps wanting to make her feel useful, he asked her to take notes as she watched them carefully. Both he and Lilly recognised her intuition and offered her an open invitation to the lab, despite her lack of training.

Margaret Howe Lovatt worked with dolphins named Pamela, Sissy, and Peter. Through daily lessons, she encouraged them to make human sounds. However, the process was tiring and progress was slow. Margaret hated leaving in the evenings, feeling that there was too much work to be done. So, she persuaded Lilly to let her live in the laboratory. She made the upper rooms waterproof and flooded them with water. That way, humans and dolphins could use the same space.

Lovatt chose Peter for the intensive language experiment. They lived together in the lab six days a week, and on the seventh day, Peter spent time in the pool with Pamela and Sissy. Through all of Peter's language lessons and voice training, Lovatt learned that he was very interested in the human body. When she sat there with her legs in the water, he would look at the back of her knee for a long time. He wanted to know how it worked.

Margaret Howe Lovatt's experience with dolphins came to an end in 1966 when the laboratory was closed due to financial problems.