A:湛蓝(zhàn) 静谧(mì) 骊歌(lì) 砭骨(biān)
B:追溯(sù) 蜿蜒(wān) 峰峦(luán) 祈祷(qí)
C:生肖(xiāo) 倒坍(tān) 荣膺(yīng) 抽噎(yē)
D:嫉妒(jí) 称号(chēng) 涟漪(yī) 殷红(yīn)
Jack is an intelligent pupil, but he lacks m____ (主动性).
如图,△ABC的三边分别切⊙O于D,E,F,若∠A=50°,则∠DEF=( )
① ____A.big B.long C.try② ____A.these B.small C.those③ ____A.you B.they C.short