A、
Jobs and food security worldwide are threatened.
B、
Negative effects are triggered on economies.
C、
Fish in the oceans are on the verge of extinction.
D、
The balance of nature is being destroyed.
【正确答案】
A
【答案解析】
A、
They planted many trees on mountains.
B、
They lowered their carbon emissions.
C、
They set aside many private lands and waters.
D、
They strengthened the regulation of food safety.
【正确答案】
B
【答案解析】
A、
He wants other countries to understand the U.S.
B、
He calls on some big companies to care about climate.
C、
He calls on people in the world to protect Earth.
D、
He wants to prove the U.S. values environment.
【正确答案】
C
【答案解析】
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