1, the first human spacewalk experiment.

1on February 7, 984, two American astronauts became two human satellites for the first time after flying freely from the space shuttle challenger. This miracle, created by astronauts Bruce mccandless and Robert L Stewart, is a test of a device that can ensure human beings to work freely in space. Mccandless untied the tether for the first time and walked in space 170 meters.

2. China participated in the International Paralympic Games for the first time.

The Third International Paralympic Games was held in Nassau County, new york, USA. For the first time, China sent a 4 1 person disabled sports delegation to participate in the competition. 18 amputees and 6 blind athletes participated in track and field, swimming, table tennis and other events. Won 2 gold medals, 13 silver medals and 9 bronze medals. Seven people * * * broke the world record for the disabled.

3. The first railway from Xining to Golmud Plateau in China was put into use.

The Qinghai-Tibet Railway runs from Xining to Golmud, with a total length of 845 kilometers. /kloc-0 started construction in September 1958,/kloc-0 laid track in Golmud in September 1979. Later, 3 1 km extended to Nanshankou Station at the foot of Kunlun Mountain, and it was put into operation in July 1984. Most of the Xige section is located above 3000 meters above sea level, and the oxygen content is only 70% of the sea level.

There are special geological areas such as desert, Gobi, grassland, swamp, salt lake and saline soil along the line, and there are 350 kilometers of waterless areas. There is a 32-kilometer railway on the salt lake.

Xu Haifeng won the first Olympic gold medal for China.

Xu Haifeng, born in August 1957. China shooter. 1On July 30th, 984, he won the gold medal in slow-fire pistol with 566 rings at the 23rd Los Angeles Olympic Games. This is the first champion in the history of China Olympic Games. He won many championships in international competitions.