题目

Baby sittingThis is a way for any young student who likes children to make money.  Family friends with small children need someone they know to help them to babysit children. Coffee Shop WaiterIf you enjoy coffee, music and talking with people, working as a waiter in a coffee shop can be a great job in your summer holiday. Caring for PetsMany neighbors and friends on vacation and people working long hours need help washing and walking with animals, this is the job for you. TeachingIf you are good at school lessons and would like to work with children, you can help them with school lessons.某同学做“研究影响蒸发快慢的因素”实验，如图所示，他在两块相同的玻璃片上分别滴上一滴水，观察图中情景可知该同学主要研究水的蒸发快慢是否与（     ）A．水的温度有关B．水的表面积有关C．水上方空气流动的快慢有关D．上述三种因素都有关