单项选择题
A.Write their lab reports. B.Find out Professor Smith's schedule. C.Interview some high school students. D.Finish their chemistry experiment.
A.She wants to quit her job in the chemistry lab. B.She wants to get practical experience. C.She's interested in becoming a psychology major. D.She wants to earn extra money.
A.Employ them as lab assistants. B.Teach classes at their high school. C.Help them with their studies. D.Pay them for participating in the study.