【单选题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You shoul...
A.
They are more likely to survive serious diseases today.
B.
Their average life span has been considerably extended.
【简答题】根据短文内容,从下面所给的A—F选项中选出能概括每一段(61-65)主题的最佳选项。选项中有一项为多余项。 A. Attach more aid to weak schools. B. Children should share the same educational rights. C. Heavy load is supposed to be taken off the students’ ...
【多选题】Consider a relation with schema R(A,B,C,D) and functional dependencies A → C, BC → D. Which of the following FDs are BCNF violations? (This is a multiple choice question)
【简答题】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 (注 ,E涂AB,F涂AC, G涂 AD ) Good study habits __ 小题1: __They’ll help you learn the material if you practice over and over again. Play around with them to fit yor o...