彝族主要分布在（）。
A.云南
B.贵州
C.四川
D.广西
参考答案：A, B, C, D
There aren't _____________ windows in this room. Are there _____________ in your room?
A. some; any
B. some; some
C. any; any
D. any; some
腈的水解可得何种产物？
