用电安全是保证人民生命财产安全的基本常识。如图所示的四幅图中符合安全用电要求的是： [ ]
A.
B.
C.
D.
B
选择正确单词填空。
1. He is a merry man _________ (in / on) red clothes.
2. Children say he _________ (bring / brings) toys on Christmas.
3. We invite our family _________ (in / to) our house.
4. They bring gifts _________ (to / for) us.
5. December _________ (twenty-five / twenty-fifth) is Christmas.
黑板有（ ）个角，一条红领巾有（ ）个角。
