I think the greatest inventions are the heating chair in the bus station and the board that shows bus arrival information.

The heating chair helps people get warm when waiting for a bus outside in cold weather. 

The board is also great because it lets people waiting for a bus check the remaining time.

We think the greatest inventions are contact lenses, post-it, and the zipper. The first one is contact lenses because they allow us to stop wearing heavy glasses. The second one is a post-it because it is a technique that can be easily removed and reattached without leaving any residue. The third one is the zipper because it allows us to connect two objects with just a single action.

We think the greatest inventions are wet wipes, Gamma - ray and CCTV.

The first one is wet wipes because they provide instant hygiene and unparalleled convenience by allowing users to clean surfaces or themselves anytime, anywhere, without the need for water.

The second one is Gamma-ray because it helps us suppress cancer and inspect industrial structures without dismantling them. 

The third one is CCTV because the cctv helps Criminal find and it cans prevent an accident too. In fact, there are some instances of that.

we think the greatest inventions are anesthetic, X-ray, and cell phone.

The first one is anesthetic . Because anesthetic helps us remove pain and enable psychological stability and rapid recovery. Also, it helps medical staffs perform smooth surgery.

The second one is X-ray. Because X-ray helps medical staffs identify fractures, osteoporosis, arthritis, etc. accurately. So, we can live a healthy life.

The third one is cell phone. Because cell phone lets us call our guardian fast, when we are in urgent situation.

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There are many great inventions around us.

We think the greatest inventions are bendable straw, glasses, and solid toothpaste.

The first one is a bendable straw because it is regarded as a great invention that innovatively improved the user experience, going beyond simple design changes.

 +This invention was invented by Joseph Friedman which has a young daughter.

  One day, He saw his daughter eat milk shake uncomfortablely so he invented it.

The second one is glasses because it helps with vision correction and clear vison It is also used as a fashion item and conceals skin concerns such as dark circles and wrinkles.

The third one is solid toothpaste because It can reduce packaging waste, is relatively convenient, and highly portable.

We think the greatest inventions are the toilet, anesthetics, cutlery.

The first one is the toilet. The toilet is an invention that help people stay clean and healthy.

The second one is anesthetics. Because they help the patient prevent  from feeling extreme pain. 

The third one is the cutlery. because It is a tool that helps us eat comfortably when we eat.

We think the greatest inventions are kiosk, Wi-Fi and lens.

The first one is kiosk.

Because kiosks enable ordering and payment without human interaction, reducing waiting times and the stress of unnecessary face-to-face contact, while also making the user experience more convenient by allowing users to easily view menus and make selections at their own pace.

The second one is Wi-Fi

Because Wi-Fi significantly enhances mobility and convenience by enabling internet access anytime, anywhere without a separate wired connection, and makes the daily lives and work of modern people more efficient by allowing multiple devices to be connected simultaneously.

The third one is lens.

Because Lenses not only correct vision to allow you to see the world more clearly, but also offer greater mobility than glasses, making daily life much more convenient.

The first one is battery because it lets us use lots of electronic devices everywhere and long. The second one is mask because it helps us maintain our health against diseases and viruses. We made good use of masks during the COVID era. The third one is barcode because it allows us to reduce error during data entry and enable fast calculations at a low cost.

We think the greatest inventions are vaccine, subway, and pre-sorting ballot box.

The first one is vaccine. Vaccine helps our body to function well, and it allows our body to recover fast. If we put vaccine in our body when we are healthy, it also prevents us from viruses.

The second one is subway.

Subway arrives on time without any traffic jam, and it always maintain fresh and comfortable interior. It is the most efficient transportation.

The third one is pre-sorting ballot box.

It is an innovative device that increases convenience while voting. It maximaze the space efficiency and helps counting the voted papers without any mistakes.

The first one is paper because able to record something on paper
The second one is the internet because it helps me to communicate with people from other countries.
The third one is velcro because it would be convenient for people who  don’t know how to tie shoelaces to wear shoes with velcro attached.

We think the greatest inventions are refrigerator, elevator, and umbrella.

The first one is the refrigerator because the refrigerator helps keep food cool and at an appropriate temperature. So we can eat more fresh food. In addition, refrigerators keep food from spoiling.

The second one is the elevator because we can go up more easily than step up. 

The third one is an umbrella  because it helps us avoid rain. If there is no umbrella, we are soaked by rain. so, we think the umbrella is one of the greatest inventions.