3.5℃

　　This is how much temperatures would rise by 2100 even if nations live up to the initial Paris promises to reduce carbon emissions; this rise could still put coastal cities under water and drive over half of all species to extinction.

　　2℃

　　To meet this minimum goal, the Agreement requires countries to tighten emissions targets every five years. Even this increase could sink some islands, worse drought(干旱) and drive a decline of up to a third in the number of species.

　　1.5℃

　　This is the most ambitious goal for temperature rise set by the Paris Agreement, after a push by low-lying island nations like Kiribati, which say limiting temperature rise to 1.5℃ could save them from sinking.

　　0.8℃

　　This is how much temperatures have risen since the industrial age began, putting us 40% of the way to the 2℃ point.

　　0℃

　　The baseline here is average global temperature before the start of the industrial age.

　　70. It can be concluded from paragraph 1 that _______.

　　A. the problem of global warming will have been quite solved by 2020

　　B. gas emissions have been effectively reduced in developed countries

　　C. the Paris Agreements is more influential than the Kyoto Protocol

　　D. humans have made continuous efforts to slow down global warming

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