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【单选题】
长期趋势的测定中，通过扩大动态序列各项指标所属的时间，从而消除因时距短而使各指标值受偶然性因素影响所引起的波动，以便使匀过的动态序列能够显著地反映现象发展变动总趋势的方法称为( )。A.
移动平均法
B.
扩大时距法
C.
最小二乘法
D.
趋势观察法
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A.
what was happened to him
B.
what the matter was with him
C.
what was wrong with him
D.
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【单选题】听力原文：W: Good morning. I'm calling to inquire about your bookshelves. M: Oh, yes. What would you like to know? W: Well, I'd like to check on the size first. M: The standard unit is 3.2 meters wide, 1.8...
A.
The design.
B.
The price.
C.
The color.
D.
The size.
【单选题】Lisa, could you tell me ________ yesterday?
A.
what did the teacher say
B.
what the teacher said
C.
what will the teacher say
D.
what the teacher will say
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