1.We offered hin our congratulations( )his passing the colle

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1.We offered hin our congratulations( )his passing the colledge entrance exams.
a.at b.on c.for d.of
2.-Would you like to go shopping tomorrow?
-If Tom does,( )
a.so do I b.so shall I c.so do I d.so I shall
3.在矩形ABCD中,AC,BD交于点O,AE平分角BAD.若角EAO=15度,求角BOE的度数
4.已知,在平行四边形ABCD中,以AC为斜边作直角三角形ACE,且角BED为直角
求证:四边形ABCD是矩形
图没有,不过如果想拿到分的话,就自己画吧,一定能画的出来的.而且,

1 C
2 So do I
3因为矩形 ∠BAE=45°∠EAO=15°
所以∠BAO=60° 所以AB=AO=BO
因为AE=√2*AO AC=2AO ∠EAC=15°
则AO/AE=AE/AC=√2/2
所以△AOE≌△AEC
所以∠AOE=135°
所以∠BOE=135°-60°=75°
4设AC BD交点为O 连接OE
因为∠AEC=∠BED=90° O为AC BD 中点
所以OE=0A=OD=1/2AC=1/2BD
所以ABCD为矩形

1.We offered hin our congratulations( )his passing the colle We offered him our congratulations ____ his passing the coll we offered him our congratulations ____his passing the exam. We offered him our congratulationgs ___ his passing the coll we offered her our congratulation--- her passing the college 英语介词选择We offered him our congratulation ______ his passing t congratulations on passing your exams! 1.passing the corridor,we'll reach to the YUANGXIANGTANG. were not we having tears in our eyes through the passing of We were greatly surprised at his not passing the exam.句型转换 we were surprised at his not passing the exam句子理解? --- “We won the match yesterday." --- " Congratulations.You