下列命题正确的是（ ）
A：一组对边相等，另一组对边平行的四边形是平行四边形
B：对角线互相垂直的四边形是菱形
C：对角线相等的四边形是矩形
D：对角线互相垂直平分且相等的四边形是正方形
用所给单词填空
（1）Sometimes we ____ food at home. （2）I ____ drinking milk. （3）We often ____ CCTV news at 7:00 in the evening. （4）I ____ the Internet once a day.（5）The results for “read English books”____ fun.（6）How often do you ____ to the English corner? （7）Everyone will____ you if you need any help.（8）The sun ____ once a day. （9）Walking can ____ you in good health.（10）I____ nine hours every night.
依法治国的核心是依宪治国。（ ）
