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【单选题】
如图边长为a的等边三角形ABC的中线AF与中位线DE交G,已知△A′DE是△ADE绕DE旋转过程中的一个图形,则下列命题中正确的是(  ) ①动点A′在平面ABC上的射影在线段AF 上; ②BC ∥ 平面A′DE; ③三棱锥A′-FED的体积有最大值.
A.
B.
①②
C.
①②③
D.
②③
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参考答案:
举一反三
【单选题】What is the main idea of the news item?
A.
IRA vows to end its armed struggle against Britain.
B.
Different opinions on the IRA decision in the Northern Ireland.
C.
The Democratic Party was responsible for the contradiction.
D.
The goal of IRA's protest against British governance.
【判断题】视觉元素 : 是把概念元素在画面上进行组织、排列,是形成一个画面的依据完成视觉传达的目的。包括方向、位置、空间、重心等
A.
正确
B.
错误
【单选题】听力原文: In a significant reversal for the IRA, the Clinton administration has denied a visa to Gerry Adams, the Sinn Fein leader and a prominent member of the organization’s ruling army council. Now the...
A.
Gerry Adams was denied a visa by the administration
B.
private talks have been going on very smoothly
C.
the administration trusts the IRA and Adams
D.
there has been no change in their relationship
【单选题】B类无机非金属装修材料的放射性限量为()
A.
IRa≤1.0,I≤1.3
B.
IRa≤1.0,I≤1.0
C.
IRa≤1.3,I≤1.9
D.
IRa≤1.3,I≤1.0
【单选题】The union representative put across her argument very effectively.
A.
explained
B.
invented
C.
considered
D.
accepted
【单选题】听力原文:What is the difference between a traditional IRA and a pension? (31)
A.
A worker can invest $ 4,500 into IRA while he can put only $4,000 into the pension.
B.
The .saver of IRA can decide the investment of the account.
C.
In IRA savings can be withdrawn freely and this is not allowed in pension.
D.
Money put in IRAs will be taxed and money in pension is tax-free.
【单选题】《滕王阁诗》的作者是
A.
王勃
B.
李白
C.
郁达夫
D.
陆游
【单选题】A类无机非金属装修材料的放射性限量为()
A.
IRa≤1.0,I≤1.3
B.
IRa≤1.0,I≤1.0
C.
IRa≤1.3,I≤1.9
D.
IRa≤1.3,I≤1.0
【简答题】格里菲斯的影片把情节作为最重要的元素来加以表现,而卓别林影片中的情节只是作为一个编造的框架,影片动作的结构基础是那些寓意隽永,甚至可以独立存在的一个个()。卓别林强调画面内部的表演、节奏、情调和气氛的视觉因素所形成的概念,所达成的视觉结构的统一。因此,在卓别林的影片中时常出现主题上的变奏和情节上的松散、淡化的表现。
【单选题】《滕王阁诗》的作者是()
A.
王勃
B.
C.
卢照邻
D.
骆宾王
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