观叶树木
参考答案:
指树木叶之色彩、形态、大小等有独特之处,可供观赏。如银杏、鹅掌楸、黄栌、红枫、七叶树、等。
酸碱指示剂颜色变化的内因是指示剂本身结构的变化,外因是溶液pH的变化。( )
—Excuse me, I want to buy some milk. Where can I find a supermarket?
—Oh, I know ______ not far from my home. [ ]
A. it
B. that
C. one
D. its