Carmakers challenged the law,in part______CO2,was not an air pollutant.
A.on the ground. B.on ground
C.on the ground that. D.on ground that
答案是C，理由是in part on the ground that部分根据是...。而on the ground在地上，当场 on ground that以什么为理由，根据
谢谢各位英语大神帮答一下
A.on the ground. B.on ground
C.on the ground that. D.on ground that
答案是C，理由是in part on the ground that部分根据是...。而on the ground在地上，当场 on ground that以什么为理由，根据
谢谢各位英语大神帮答一下
