The ninth planet of the solar system was 13 ______ not long ago. It happened in 1930. Scientists had been hunting for the planet for a 14 ______time. They had calculated its probable position but there was no proof that the planet really 15 ______. It was too 16 ______ away for the telescopes of that time to find it. It’s worth mentioning that the first photos of the planet were taken by a very young researcher. He was only twenty-four and had no formal education in astronomy. However, he was deeply involved in the search for the ninth planet. The planet at the edge of the 17 ______ system was called Pluto, after the Roman god. The name for the planet was 18 ______ by an 11-year-old British girl.
Прочитайте текст и заполните пропуски 13–18 словами, напечатанными в правой колонке под цифрами 1–8. Каждое из этих слов может быть использовано только один раз. В ответе укажите цифры, под которыми значатся выбранные Вами слова. Два слова в этом списке 1–8 лишние.
The ninth planet of the solar system was 13 ______ not long ago.
1) discovered
2) long
3) launched
4) solved
5) solar
6) existed
7) suggested
8) far
Правильный ответ указан под номером 1.

