题干
—Excuse me, is this _______ bicycle?
—No, it isn't. _______ is over there under the tree.
A：your; Mine
B：my; Your
C：her; Her
D：mine; Yours
答案(点此获取答案解析）
A
—Excuse me, is this _______ bicycle?
—No, it isn't. _______ is over there under the tree.
A：your; Mine
B：my; Your
C：her; Her
D：mine; Yours
H＋(溶液)＋In－(溶液)（黄色），故可用作酸碱指示剂。