▲ 閱讀下文，回答第 38 － 42 題
         Carbon dioxide (CO2 ) is good at holding in heat from the Sun, and even a small increaseof the gas in the atmosphere can cause Earth to get even warmer. Carbon capture, usage andstorage ( CCUS ) is about different technologies that can keep CO2 produced by factories andpower plants from causing global warming. The idea is simple, and there are only a few mainsteps in the process. The first step is about trapping carbon emissions from factory chimneys. Forinstance, a filter can be placed in the chimney, so that the carbon is trapped and it cannot go outinto the atmosphere. Then, the gas is piped to places where it can be stored or used. If storedunderground, it cannot contribute to the climate crisis. If used, for instance, it can help growgreenhouse plants or make soda drinks.
        While CCUS projects can clearly benefit the environment, these projects are notstraightforward as there are many issues to be dealt with, such as maintaining the storage site,which have slowed start-ups of CCUS projects worldwide. Thus, with only a few CCUS projectsoperating now, there still aren’t enough to seriously help with the world’s carbon emissions.Early forerunners in this technology are the US, Canada, and Norway. The good news is thatCCUS has now gained momentum in other countries, where 30 new projects have begun in thepast three years. The International Energy Agency says there must be many more to keep carbonemissions from heating the world too much.
【題組】38. What is the purpose of this article?
(A) It informs us about CCUS.
(B) It advises us against CCUS.
(C) It introduces new CCUS projects.
(D) It shows CCUS impact on technology.