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【单选题】
黄酮类化合物的颜色加深,与助色基团取代位置与数目有关,尤其在()位置A.
5位增加3羟基
B.
7,4’位引入了助色基团
C.
6,7位引入了助色团
D.
3位引入了助色团
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举一反三
【单选题】The maps show how Northwood village and Peakside village have developed over three different periods, 1965, 1985 and the present day.
A.
The maps show how two villages have developed over three different periods.
B.
The maps illustrate the changes that have occurred in two villages, Northwood and Peakside, over a roughly 50 year period.
C.
The maps illustrate the changes that have occured in two villages, Northwood and Peakside, from 1965 to the present.
【简答题】How Do Animals Catch their ZZZ's（打鼾声）？ Different creatures have developed some pretty creative ways to get their rest and stay safe． The lizard likes to sleep at the far end of small branches hanging ...
【简答题】.------What can I do for you? ------I’d like to have the film____. How much is it? A developed B.washed C.taken D.made
【单选题】有关耳蜗的描述,错误的是
A.
由蜗螺旋管围绕蜗轴形成的
B.
蜗轴向蜗螺管内伸出骨螺旋板
C.
骨螺旋板与蜗管相接
D.
前庭阶和鼓阶互不相通
E.
蜗螺旋管围绕蜗轴旋转2.5周
【单选题】当专业验收规范对工程中的验收项目未做出相应规定时，涉及安全、节能、环境保护等项目的专项验收要求应由（）组织专家论证。
A.
建设单位
B.
施工单位
C.
监理单位
D.
设计单位
【单选题】How many systems have Chinese classical gardens developed into?
A.
One
B.
Two
C.
Three
D.
Four
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