Climate change is one of the most pressing issues facing the world today. The scientific consensus (共识) is clear: the Earth’s climate is changing, and human activities are the primary cause. However, there is still debate among some politicians and members of the public about the reality of global warming and the extent to which humans are responsible.

One major source of controversy is the role of carbon dioxide (CO²) and other greenhouse gases in causing global warming. Some skeptics (怀疑者) argue that other factors, such as changes in solar radiation or natural cycles of climate change, could be responsible for the warming trend observed in recent decades. However, the overwhelming majority of scientists agree that the evidence points to human activities, especially the burning of fossil fuels, as the main driver of global warming.

Another point of contention is the potential impacts of climate change on the economy and society. While some argue that the costs of transitioning to cleaner energy sources and reducing greenhouse gas emissions would be too high, others point out that the costs of inaction could be even greater. Rising sea levels, more frequent and severe weather events, and damage to ecosystems could have significant economic and social consequences.

Despite the ongoing debate, many countries and international organizations have taken steps to address the threat of climate change. The Paris Agreement, signed by 195 countries in 2015, aims to limit global warming to well below 2 degrees Celsius above pre-industrial levels, with a goal of limiting the increase to 1.5 degrees Celsius. To achieve this, countries have pledged to reduce greenhouse gas emissions and increase investments in renewable energy and other low-carbon technologies.

【小题1】What do most scientists agree on about climate change?

A．The Earth’s climate is not changing and global warming is a false alarm.

B．The Earth’s climate is changing but humans are not to blame.

C．The Earth’s climate is changing and humans are the major reason.

D．The Earth’s climate is changing but the cause is unknown.

【小题2】What is the main cause of global warming according to the article?

A．Changes in solar radiation.	B．Natural cycles of climate change.
C．Burning of fossil fuels.	D．Other greenhouse gases.

【小题3】What is NOT included in the potential impacts of climate change?

A．Reduced air pollution.	B．severe weather events.
C．Rising sea levels land.	D．damage to ecosystems.

【小题4】What is the Paris Agreement?

A．A treaty to deal with the threat of climate change.

B．A global effort to increase greenhouse gas emissions.

C．An international plan to limit the use of fossil fuels.

D．An agreement to deny the problem of climate change.