1.We offered hin our congratulations( )his passing the colledge entrance exams.a.at b.on c.for d.of2.-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 shall3.在矩形ABCD中,AC,BD交于点O,AE平分角BA

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1.We offered hin our congratulations( )his passing the colledge entrance exams.a.at b.on c.for d.of2.-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 shall3.在矩形ABCD中,AC,BD交于点O,AE平分角BA
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1.We offered hin our congratulations( )his passing the colledge entrance exams.a.at b.on c.for d.of2.-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 shall3.在矩形ABCD中,AC,BD交于点O,AE平分角BA
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.We offered hin our congratulations( )his passing the colledge entrance exams.a.at b.on c.for d.of2.-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 shall3.在矩形ABCD中,AC,BD交于点O,AE平分角BA
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

哇~

1.We offered hin our congratulations( )his passing the colledge entrance exams.a.at b.on c.for d.of2.-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 shall3.在矩形ABCD中,AC,BD交于点O,AE平分角BA 英语介词选择We offered him our congratulation ______ his passing the college entrance exam we offered her our congratulation--- her passing the college entrance exam 填on还是for we offered him our congratulations ____his passing the exam.为什么选on,选for为什么不对? 8.7 We offered him our congruatulations____his passing the college entance examsA at B onC forD of We offered him our congratulations his success.为什么?处不能用for,to We all offered Mike our congratulations（）his success.用什么介词?为什么 David offered us a lift when he was leaving the office,but our work not finished,we declined his offer. We offered him our congratulationgs ___ his passing the college entrance exaA at B of C for D on We offered him our congratulations ____ his passing the college entrance exams.A.on B.at C.for D.in our neighbor offered to look after our baby while we were away,___was very kind of her.选 it 还是which? offered to help us with our offered Walter offered us a lift when he was leaving the office,but our work not finished,we declined the offer如何改为状语从句? He offered us a lift when he was leaving the office ,but our work__ .We declined his offer.空中可以填was not finished吗? 翻译一下 帮个忙 谢谢啦!Our planner really helped our vision of the day become a reality. We wanted to the day to be classic, romantic, personal and beautiful. Our main theme was to incorporate our love of the sea and sailing. There were hin 1._____Chinese people love ____country(国家).A.Our our B.We we C.we our We offered him the house for 1000 yuan.和We offered him 1000 yuan,for the