【单选题】Americans are getting ready for the biggest soccer event in the world. For the first time the World Cup soccer competition will be held in the United States. While millions play the game around the wo...
A.
Americans were preparing for the World Cup when the author wrote this article.
B.
More and more young Americans became interested in soccer in the last 30 years.
C.
Soccer is the fastest developing sport in the world.
D.
The article was written before the World Cup held in the United States.
【简答题】(1)已知 tanα= 2 3 , 1 sin 2 α-2sinαcosα+4 cos 2 α 的值. (2)已知 π 4 <α< 3π 4 ,0<β< π 4 ,且cos( π 4 -α)= 3 5 ,sin( π 4 +β)= 5 13 ,求sin(α+β)的值.
【判断题】“能独自生活的人,不是野兽,就是上帝。” ——亚里士多德
【简答题】已知cosα-sinα= 3 5 2 ,且π<α< 3 2 π,求 sin2α+2cos2α 1-tanα 的值.
【单选题】搓条的基本要求是:()、光洁、粗细一致、不起皮。
【单选题】本节(5.5)中提到,()的《卜算子.咏梅》是"读陆游咏梅词,反其意而用之"。
【单选题】建筑物的定位依据必须明确,一般有以下三种情况:(1)城市规划部门给定的城市测量平面控制点,(2)城市规划部门给定的建筑红线或规划路中线,(3)( )。