Initially South Korea had been doing well against the virus, but in August, the number of reported infections nearly doubled, from 56 to 103, in just two days. It reached a peak of 441 cases on August 26 before ticking back down to at least 100 new infections ger day. That month, the health ministry banned large gatherings and shut nightclubs, churches and beaches to turn the tide.

Under such a terrible situation, many restaurants have taken effective measures to cope with it. For example, No Brand Burger, a fast-food chain in South Korea, is using robots to take orders, prepare food and bring meals out to diners. As a result, customers can avoid any interaction with a human server during the pandemic （疫'情）.

Customers order and pay via touchscreen, and then their request is sent to the kitchen where a cooking machine heats up the buns and patties. When it's ready, a robot “waiter” brings out their takeout bag. Human workers add toppings to the burgers and wrap them up in takeout bags before passing them over to serving robots.

Last month, takeout orders at No Brand Burger accounted for 58 percent total sales, up from 42 percent in July, according to the chain's parent company, Shinsegae Food. After a recent second wave of coronavirus infections, restaurants in South Korea were only allowed to provide takeout and delivery after 9 p. m. —a restriction that was only lifted Monday. Other restaurants in Asia have started employing robot servers during the pandemic.

In South Korea, the Italian restaurant chain Mad for Garlic is using serving robots even, for sit-down customers. Using 3D space mapping and other technology, the electronic “waiter”, known as Aglio Kim, navigates between tables with up to five orders. Mad for Garlic manager Lee Young — ho said kids especially like the robots, which can carry up to 66 pounds in their trays.

The great scientist Yuan Longping passed away on May 22nd, 2021. ①All Chinese people were very ________ when hearing the quite bad news. ②hunger, Mr. Yuan, millions of, helped, out of, people. So people want to do something to remember the great man. Many people think that saving food is the best way to pay back his super achievement. Actually, the whole society has been taking action to fight against food wasting for many years. The following is an example.

③A university student ________ Liu Jichen, has developed an app—Clear Your Plate. After a meal, people can use the app on the phone and take pictures of their empty plates. After the pictures are dealt with by the app, people will get some points. Then they can change the points into some gifts from the website. Now this app is very popular with young Chinese and has more than 1 million users. ④Mr. Liu said, “It’s important to encourage young people to develop the habit of saving food.”

Technology is a helpful way to save food but not the only one. ⑤Anyway, we must keep the good habit of thrift forever, just like what scientist Yuan said and did. ⑥If everyone tries to save food, ____________________.