——Taking a walk after supper is really a ____ way.
——____. It keeps us healthy, too.
A:relaxing, So it is
B:relaxing, So is it
C:relaxed, So it is
D:relaxed, So is it
人类通过摄取各种不同的食物,以补充人体所缺乏但必需的各种微量元素,下列微量元素中,对人体有害的是( )