【单选题】1岁女婴,发热三天后出皮疹,皮疹2---3天出齐,疹退后躯干四肢有棕色色素沉着。最可能的诊断是
【单选题】已知点P(2,-3)、Q(3,2),直线ax-y+2=0与线段PQ相交,则a的取值范围是( )
【简答题】Your ad should emphasize the most important ___________.
【单选题】To emphasize an idea through style, place it
B.
in a dependent clause.
C.
in the middle of a sentence.
D.
Any of these techniques would emphasize the idea.
【单选题】已知A(1,0)、B(5,3),则线段AB的长度为
【单选题】已知点A(2,3),B(8,-3),则线段AB中点的坐标为( )