在选择指数平滑系数的合适值时，α值越大，对近期需求情况给的权致越大，模型就能明确地对时间序列的变化做出反应。
参考答案：错
Students get lots of and they also have ________. [ ]
A. practices; funs
B. practice; fun
C. practices; fun
The beautiful dress ______ Miss Jones went to the ball was borrowed from a friend of hers. [ ]
A. in which
B. worn by
C. through which
D. on which
