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【多选题】
按水平法计算的平均发展速度是()。A.
各环比发展速度的序时平均数
B.
各环比发展速度的算术平均数
C.
各环比发展速度的几何平均数
D.
各环比发展速度的调和平均数
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反馈参考答案：
举一反三
【单选题】The reason (why) Jack (failed) to (attend) the lecture is (attend) he had a bad cold.
A.
why
B.
failed
C.
attend
D.
attend
【简答题】在布劳涅旅馆里,也许是因为红颜色的映照,爱玛的头发颜色是 ____ 的。
【单选题】Usually children are allowed to ___________ when they are six years old.
A.
attend school
B.
attend the school
C.
join school
D.
join the school
【简答题】Why do hundreds of reporters attend the in person? They attend the in person to experience it ______.
【单选题】The famous singer and dancer____ our party this evening.
A.
are going to attend
B.
was to attend
C.
were to attend
D.
is going to attend
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