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According to WMO, what is the main cause of the rising temperatures?
According to WMO, what is the main cause of the rising temperatures?
admin
2022-05-08
86
问题
According to WMO, what is the main cause of the rising temperatures?
The United Nations weather agency says the past 10 years were likely the hottest decade since scientists began keeping records.
In a new report, the World Meteorological Organization, or WMO, blames the rising temperatures mainly on greenhouse gases produced by human activities.
"Average temperatures for the five-year, 2015-to-2019 and 10-year, 2010-to-2019 periods are almost certain to be the highest on record," the WMO said.
Petteri Taalas, Secretary-General of the WMO, says severe heatwaves and floods that used to happen about once every hundred years have become "regular" events.
"Countries ranging from the Bahamas to Japan to Mozambique suffered the effect of devastating tropical cyclones. Wildfires swept through the Arctic and Australia," he noted.
Taalas said that one of the main effects of climate change is the lack of predictable rainfall. This presents a threat to successful harvests and will likely create food security problems in some countries in the future, he said.
The report said climate change was a main driver of a recent increase in world hunger after 10 years of decrease. It estimated that about 820 million people suffered from hunger in 2018.
The WMO said that weather disasters have displaced millions of people this year and affected rainfall from India to northern Russia, to the central United States and other areas.
Oceans, which take in an estimated 90 percent of the extra heat produced by greenhouse gases, are now at their highest recorded temperatures. Sea water is also 25 percent more acidic than it was 150 years ago, the report said. This is threatening ocean environments that provide food and jobs for billions of people.
Levels of carbon dioxide in the atmosphere reached a record 407.8 parts per million in 2018 and continued to rise in 2019. Experts say carbon dioxide can be damaging because it can remain in the atmosphere for hundreds of years and in the ocean for even longer.
选项
A、Coal burning.
B、Greenhouse gases produced by human activities.
C、Leaves burning.
D、Industrial waste gas.
答案
B
解析
什么才是导致气温持续升高的主要原因呢?原文说:In a new report,the World Meteorological Organization,or WMO,blames the rising temperatures mainly on greenhouse gases produced by human activities.也就是说,世界气象组织把气温持续升高归因于人类活动所排放的温室气体。因此,答案是B。选项A(燃烧煤炭)、C(燃烧树叶)和D(工业废气)都属于人类活动的具体内容,而B则是它们的统称。
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