The Black Death , an unprecedented______________ in history, had a great impact on the European culture. A: calamity B: extinction C: withdrawal D: species

The damage caused by the war or strikes belongs to _______. A: Special extraneous risks B: General extraneous risks C: Fortuitous accidents D: Natural calamity

The earthquake that occurred in India this year was a major calamity in which a great many lives were lost. A: casualty B: catastrophe C: catalogue D: crusade

中国大学MOOC: The production of commercial concrete materials releases tons of the greenhouse gas carbon dioxide (CO2) into the atmosphere each day, contributing to the calamity of climate change.

The production of commercial concrete materials releases tons of the greenhouse gas carbon dioxide (CO2) into the atmosphere each day, contributing to the calamity of climate change. A: 正确 B: 错误