找出与中括号内单词意义相反的单词.
1. [surface] a.bottom b.conscience c.bureau d.hymn
2. [monotony] a.ambition b.hardship c.variety d.nonsense
3. [dawn] a.dusk b.daybreak c.authority d.blossom
4. [scarce] a.huge b.common c.religious d.humble
5. [faint] a.dumb b.notable c.rare d.strong
答案: a; c; a; b; d
