如果,在△ABC中,AD是高,AE是∠BAC的平分线,∠BAC=54°,∠C=70°.求∠EAD的度数.
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若向量α=(1,-2,1)与β=(2,3,t)正交,则t=()
Thecostofthevariousrepairsamounts__________totaltojustoverahundredpounds.
TheshoesaremadeinWuxiCity,______isfamousforit'sproductsoflightindustry.
TheGreatWallinChinaisoneofthefew_____objectsontheearth_____fromthemoon.
______progressyouhavemakethisterm!