已知在△ABC中，∠C=90°，BC=3，AC=4，点D是AB边上一点，将△ABC沿着直线CD翻折，点A落在直线AB上的点A′处，则sin∠A′CD=____ 

如果某人动脉出血，下列做法可取的是（　　）

动词填空 
(1)Our teacher told us that the earth ____  (move ) around the sun.
(2)Audrey Hepburn ____ (honour) with a number of awards during her lifetime.
(3) Why didn’t you understand the problem? I explained it just now. 
   Sorry, I ____ (consider) where to spend my holiday.
(4)Please stop talking, guys. I can’t hear what the youth worker____ (announce).
(5)How happy the students from different countries were ____ (see) each other yesterday!
(6)The old man seems rather sad. Perhaps he____ (lose) something important.
(7)Before I saw the film, I____ (not see) a film for 2 years.
(8)His parents promised that they ____  (take) him to the USA if he did well in all his subjects.