问题
选择题
My daughter wants a rabbit for long, but I have no time to buy _____ for her. [ ]
A. it
B. one
C. the one
D. that
答案
答案：B
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My daughter wants a rabbit for long, but I have no time to buy _____ for her. [ ]
A. it
B. one
C. the one
D. that
答案：B
生成，可向溶液中滴加Ba（NO3）2溶液