Liu Jichen,a student from Tsinghua University,has developed a WeChat mini-program called"Clear Plate".After a meal,users can open the mini-program and take a picture of their empty plates.Once the picture is recognized by the AI，users can collect points and use them to buy gifts or buy charity meals and then send them to children in impoverished rural（贫困的乡村） areas.
In November 2020，Liu and his team,together with other organizations,organized the "Clear Your Plate"program for the third year.It has swept over 1，017 universities across the country.
The one-month program attracted almost 1.6 million participants（参加者） and reduced food waste by 862 tons and carbon emissions（碳排放） by 3，337 tons.
The idea to develop such a mini-program came from Liu's experience in a canteen（食堂）.In 2017，he found that a restaurant would give dinners who finished off their food a card and offer small gifts after a certain number of cards had been collected.
"Technological innovation（科技创新） is a good way to reduce food waste,"Liu thought.He organized a team of 20 members to work on the project at the end of 2017.To solve the AI's problem of identifying（识别） photos of empty plates,the team spent half a year collecting over 100，000 samples in canteens and restaurants.In 2018，the mini-program was officially put into use on Oct.16，World Food Day.
Thanks to his creative and practical（实际的） actions,Liu,along with the other 16 members was chosen to be the 2020 Class of Young Leaders for the Sustainable Development Goals by the UN Office of the Secretary General's Envoy on Youth in September.
"There were so many unknowns in research and development.For our team members,the biggest challenge was whether we were confident enough to complete it," Liu said.They not only achieved their goal,but now,the mini-program has more than 5 million registered users,according to Liu. "We hope our efforts can start a new trend among the younger generation by encouraging them to cherish （珍惜） their food and develop the habit of thrift（节约），" Liu added.


【小题】What can we know about the "Clear Your Plate" mini-program？ ______

A.It aims to put an end to waste and encourage thrift.

B.Its 6 million users are mostly students.

C.It helped reduce food waste by 3，337 tons.

D.It is an exchange of food for rewards.

【小题】How did Liu Jichen get the idea to develop such a mini-program？ ______

A.Liu's experience in rural areas.

B.Liu's team spent half a year collecting over 100，000 samples.

C.Liu's experience in a canteen in 2017.

D.Liu's experience was officially put into use.

【小题】What challenge did Liu and his team face？ ______

A.They found it tough to promote the campaign.

B.They felt uncertain whether they could complete the project.

C.They lacked professional technical support.

D.They had difficulty gathering enough samples.

【小题】Which of the following best describes Liu Jichen？ ______ .

A.Humorous

B.Active

C.Talented

D.Creative

【小题】Where is the text probably from？ ______

A.A guide book.

B.A news report.

C.A book review.

D.A text book.