1．Withannualrainfallclose
问题详情：
1．With annual rainfall close__________zero，Antarctica is technically a desert.
2．Antarctica holds 90% of the world's ice，and most of its fresh water is________a frozen state.
3．________average it is two kilometers thick.
4．Yet Antarctica is full of wildlife，which has adapted________its extreme conditions.
5．The rest of the plants are made up________mosses，algae and lichen.
6．Gases and minerals，________the form of volcanic dust trapped in the ice，can tell us a lot of about what the world's climate was like in past ages.
7．One rock，known________the “Alien” rock，may contain evidence of extraterrestrial life.
8．A Norwegian called Carstens Borchgrevink became the first man to set foot________the Antarctic mainland.
9．________particular，it aims to keep Antarctica free from nuclear tests and radioactive waste.
10．Today scientists________many countries travel to Antarctica to study its resources.
【回答】
9．In
知识点：完成句子
题型：完型填空
