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【多选题】
西式三角型插花焦点花的插法，正确的有（ ）A.
焦点花宜插入整体花型的中下部
B.
焦点花宜插入整体花型的中部
C.
焦点花宜插入整体花型的上部
D.
焦点花插入角度为45°左右
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反馈参考答案：
举一反三
【单选题】— I dropped in at your house at about ten last night, but you weren't in. — I ______ regular exercises at the club. [ ]
A.
did
B.
was doing
C.
had done
D.
have been doing
【简答题】如图7.4.7所示电路，已知R=0.5Ω，L=1H，C=1F，a=0.25，求：
【简答题】纳税担保的形式包括保证、抵押、质押。 （ ）
【单选题】— You were out when I dropped in at your house. — Oh, I _____ for a friend from England at the airport. [ ]
A.
was waiting
B.
have waited
C.
am waiting
D.
had waited
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