I've had ______ bad cold, so I don't think I can go to ______ school today.
A:a; /
B:/ ; the
C:/; /
D:a ; the
按右面的程序框图运行后,输出的S应为【 】.
阅读下面这首诗歌,回答问题。
乡村四月
翁卷
绿遍山原白满川, 子规声里雨如烟。
乡村四月闲人少, 才了蚕桑又插田。