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【单选题】
黄连的荧光反应显A.
碧蓝色的荧光
B.
金黄色的荧光
C.
棕色荧光
D.
绿色荧光
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举一反三
【单选题】Before starting university, you'd better choose a course,_________ best reflecting your interest and strength.
A.
one
B.
the one
C.
that
D.
which
【简答题】Writing You should spend about 40 minutes on this task. Write about the following topic: In some countries young people are encouraged to work or travel for a year between finishing high school an...
【简答题】内聚型村落建筑讲究负阴抱阳,______,靠近水源,______,有平地则聚,_______。
【单选题】28 Before starting university, you'd better choose a course, ________ best reflecting your interest and strength.
A.
one
B.
the one
C.
that
D.
which
【单选题】波长为500nm的绿光投射在间距为0.022 cm的双缝上,在距离为180 cm处的光屏上形成干涉条纹,两个相邻亮条纹之间的距离是( )
A.
3.08mm
B.
4.0mm
C.
4.09mm
D.
5.0mm
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