【专题】慢速英语 （英音） 2017-05-08

2017-05-08 Special English<br>This is Special English. I'm Mark Griffiths in Beijing. Here is the news.<br>Tianzhou 1, China's first cargo spacecraft, has completed the country's first in-orbit refueling test with the unmanned Tiangong II space laboratory.<br>The China Manned Space Agency has called the mission a success. <br>The space agency said the refueling test was a major technology breakthrough and has paved the way for China to assemble and operate a space station.<br>The agency said China has become the third nation to complete in-orbit refueling technology, following Russia and the United States.<br>As the first of the planned three such tests for the cargo spacecraft, the in-orbit refueling took five days. Making sure there is no leakage of fuel is crucial.<br>The agency said that after the first test, the two spacecraft will stay connected as they orbit Earth for around two months. The second in-orbit refueling test will be conducted in June.<br>After that, the two spacecra...