试题题干
Natural gas can serve as an( )to coal and oil because it is more environmentally friendly.
参考答案
正确答案:
试题解析
本题考查名词辨析。option意为"选择”,extra意为“额外的事物”,addition意为“增加物”,alternative意为"替代物”,故选D。
句意:天然气可以作为煤和石油的替代品,因为它更环保。
Natural gas can serve as an( )to coal and oil because it is more environmentally friendly.
本题考查名词辨析。option意为"选择”,extra意为“额外的事物”,addition意为“增加物”,alternative意为"替代物”,故选D。
句意:天然气可以作为煤和石油的替代品,因为它更环保。