题干
—I'll be away for a long time.
—Don't worry. She can look after your pet ________.
A：careful enough
B：enough careful
C：carefully enough
D：enough carefully
答案(点此获取答案解析）
C
，四边形A′B′C′D′和四边形A″B″C″D″位似，位似比
．四边形A″B″C″D″和四边形ABCD是位似图形吗？位似比是多少？
关于直线l：
对称的充要条件是 （）