With the International Conference on Food Loss and Waste closed on Saturday in Jinan, Shandong Province, the country has sent a signal to     1     world that China will deal with issues concerning food security by reducing loss and waste in agriculture. With the theme of reducing food loss and food waste and promoting     2     (globe) food security, the three-day event     3     (hold) both online and offline attracted more than 300 participants.

The current world grain production is about 2.8 billion tons a year. Therefore, the loss of only one percentage     4     (be) equal to the loss of 28 million tons of food. This can feed about 70 million people.

In recent years, China     5     (make) great progress in controlling loss and waste in food, with main efforts including upgrading facilities and     6     (equip). In Shandong Province, China’s major grain producer, the Sinograin (中粮集团) grain storage site is equipped with 4,500 high-definition cameras and 280,000 temperature sensors     7     (ensure) that the stock (储备) is in the best condition. Data shows that during China’s 13th Five-Year Plan period (2016-2020) , about 13 million tons of food had been saved     8     (year) after production.

We cannot end hunger     9     we do not deal with the high levels of food loss and waste. Cooperation and innovations (创新) in business models, technologies and digital solutions could all contribute     10     reducing food loss and waste.

Chinese astronauts in Tiangong space station opened a science lecture on December 9th, 2021 as they traveled around     1     Earth.

There     2     （be）a lecture and some interesting activities on that exciting day. First, Zhai Zhigang, Wang Yaping and Ye Guangfu, all members of the Shenzhou XIII mission crew, greeted students, teachers and other participants as the lecture began at 3:40 pm. They then showed viewers the place     3     they live and work. The astronauts carried out experiments     4     （show）interesting physical phenomena（现象）in space,     5     （include） "disappearing buoyancy（浮力）" and a "water ball". At last, before the end of the livestreamed activities, they     6     （happy）answered questions from students.     7     （million）of primary and middle school students across China watched the 60-minute televised event, which was the first lecture of the Tiangong Class, China' s first extraterrestrial（地球大气圈外的）lecture series to make students interested     8     space science.

The manned space agency said that more lectures would     9     （hold）based on the country's manned spaceflights and would also be presented by some     10     （profession）Chinese astronauts. Such activities are intended to spread knowledge about manned spaceflights for science among young people.

At the 2020 Tokyo Olympic Games, China’s sprinter Su Bingtian made history by     1    (become) the first Chinese athlete to make it to the final of men’s 100m Olympic event.

“I’m very     2    (excite) to be in the 100m final. Stepping on the track has realized my dream.” Su said after the race. Su has set     3     Asian record of 9.83 seconds,     4     is also the best performance for the Chinese on the world stage.

“London 2012 was my first Olympics. I was just a young man eager to become one of the top athletes.     5    (lucky), perseverance(坚持) helps me prepare     6     the game and with my     7    (determine), I make my dream come true. I feel more confident than I used to be. It is a breakthrough for me     8    (complete) the semi-final at that time.” Because of his excellent performance, Su, titled the “Asian flying man”, was chosen as the flag-bearer for the Chinese delegation at the closing ceremony of the games on Aug 8.

Su’s great success     9    (inspire) more Chinese athletes and teenagers to improve     10    (they) since he lowered the Asian 100m record to 9.83 seconds.