下列各组生物性状中，不属于一对相对性状的是（　　）

阅读下面短文，从短文后各小题所给的A、B、C三个选项中，选出可以填入空白处的最佳选项。

                                                          The New Baby

 The picture shows a family visiting their new baby in hospital. I think it's probably the evening, because the light is 1, so the father must have brought his children 2work.

 There are two children beside the baby, a boy and a girl. The 3 is a little older than his sister. He's about six or seven. He     4 proud. The girl looks very 5 to have a new sister.

 The father has his arm around6children. He looks proud as well. The mother is sitting 7. She looks happy 8a little tired.

 The baby is in the middle. I guess it’s a girl,9she is wearing pink clothes. The baby is10 despite (尽管，不管) all the noise and excitement.

当“嫦娥二号”发射时，太阳直射点（  ）

由于货车超载所造成的交通安全问题日益突出．如图所示为某型号货车紧急制动时的v²﹣x图象（假设制动过程做匀减速直线运动，其中v为货车的速度，x为制动距离），其中图线l为满载时符合安全要求的制动图象，图线2为严重超载时的制动图象．某路段限速72km/h，是根据该型号货车满载时安全制动时间和制动距离确定的．请通过计算回答：