Wushu is my best, and has received numerous awards
Martial art is my expertise, and has received numerous awards
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- 1Tom is _____ at English,but he does do ____ in Chinese.(good)
- 2数学小故事20字--30字多的不要!
- 3Their friends often help them.的一般疑问句是什么?
- 4以“我学会了阅读文言文”为题写一篇500字的作文.
- 510.设数列{an}的前n项和Sn=3/2n^2-1/2n,数列{bn}为等比数列,且a1=b1,b2(a2-a1)=b1,求数列{an},{bn}
- 6在等腰直角三角形ABC中,AC=BC,∠C=90度 AD平分∠BAC,DE垂直AB于点E AB=15厘米求三角形DBE的周长
- 7英语 政史什么分数是B
- 8等差数列an的前n项和为Sn,设S3=122,且2a1.a2.,a3+1成等比数列,求Sn
- 9若在三角形ABC和三角形呢ADE中,存在AB比AD等于AC比AE等于BC比DE等于三分之二,且三角形ABC与三角形ADE的周长之差为十二厘米,求三角形ADE的周长
- 10如图:在四边形ABCD中,∠ABC=∠ADC=90°,点E是AC边的中点,EF平分∠BED.求证:EF⊥BD.