单选题 According to the passage, which of the following is TRUE of the last hundred years?

A、 Fossil fuels were burned for the first time.
B、 The average temperature at the Earth's surface has become 2℃ cooler.
C、 The amount of carbon dioxide in the atmosphere has increased measurably.
D、 The amount of farmland worldwide has double

【正确答案】 C

【答案解析】从第二段The burning of fossil．．．have increased atmospheric carbon dioxide by a— bout l5 percent in the last hundred years可知过去的100年中，化石燃料的使用使得空气中二氧化碳增长了15%，选项C说二氧化碳增加量是可度量的，符合文意。