若不等式ax2+bx+2＞0的解集为(-12，13)，求a+b的值．

（A）根据下列句子及所给汉语注释，写出空缺处各单词的正确形式，每空只写一词。
小题1: Ningbo is a beautiful 　▲　（城市）with a long history.  
小题2: Uncle Wang usually goes 　▲　 （游泳）in the river nearby on Sundays.
小题3: He can’t see the blackboard clearly, so he needs a pair of 　▲　（眼镜）.
小题4: Sorry, I can’t follow you. Would you please speak more 　▲　（缓慢地）?
小题5:David wanted to buy an iPhone 4, but his father didn’t 　▲　（同意）.
（B）在下列各句的空格内填上一个适当的完整的单词，该词的首字母已给出。
小题6: It’s cold outside. Please put on your w　▲　 winter coat.
小题7:Last year we p　▲　 a lot of trees around our school. And now they grow well.
小题8: This backpack is c　▲　, but he still can’t afford it.
小题9:May is the f　▲　 month of the year.
小题10: Don’t worry about me, mom. I can take care of m　▲　.

（C）根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。
Some colors make us feel calm and peaceful. Blue is one of these colors. Wearing blue clothes or sleeping in a blue 　小题11:　 is good for the mind and body. Blue can 小题12:　 mean sadness. Someone who is feeling sad may say “I’m feeling blue.” Some colors make us feel happy. Orange is such a happy color. It can bring you happiness and cheer you up when you are sad. If you feel 　小题13:　 or weak, please wear colors that make you feel energetic. Green can give you energy, because it 　小题14:　 new life. And you can also wear red. That makes it easier 　小题15:　 you to take action.