How many performances have been planned for the conference?
mentioneD.

未分类题Which of the following words can NOT be used to complete 'We've seen the film______'?D.yet

问答题There are 11.____[填空1]___ and 12.___[填空2]_____ ways by which one can measure the 13.____[填空3]______ of employment on 14.___[填空4]_____. We compared the grades of students working a lot with those working much less or not at all. We also 15.___[填空5]______ workers with non-workers 16.____[填空6]_____ commitment to education. 17___[填空7]______, we followed students over time as they increased or decreased their work hours, and we 18._____[填空8]________ the effects of different employment patterns on school 19.____[填空9]_____. We 20.____[填空10]_____ numerous explanations for these negative effects: Working students have less time to 21._____[填空11]_____ school assignments, get too tired from work to study, view school less 22._____[填空12]_____, and increase alcohol and drug use because they have more spare money. To summarize, working 20 hours or more weekly can 23._____[填空13]____ decreased school performance and increased drug and alcohol use. If students want to be successful in school, they should 24.__[填空14]_______ that early employment builds character and 25.___[填空15]_______ work no more than 10 hours per week.