1. [单选题]下列各组词语中，没有错别字的一组是
A. 以逸待劳 分庭抗理信口雌黄 哄堂大笑
B. 漫不经心 和颜悦色见微知著 推心置腹
C. 突如其来 接踵而至精妙绝伦 浑然一体
D. 张灯结彩 休威与共不知所终 估名钓誉
2. [单选题]水稻叶上、下表皮的主要区别在于( )。
A. 气孔数量多少
B. 表皮细胞形状
C. 有无硅质细胞
D. 有无泡状细胞
3. [单选题]What does the word “this” underlined in the third paragraph refer to?
A. We will lose much more than we can gain．
B. Humans have begun destroying rainforests．
C. People have a strong desire for resources．
D. Much carbon dioxide comes from burning rainforests．
