李先生购买 * * 票中了奖，获奖金15000元，他应按（）税率计算缴纳个人所得税。
A、10%
B、20%
C、30%
D、40%
参考答案：B
Being able to speak another language fluently could be a great ___when you are looking for a job. [ ]
A. advantage
B. chance
C. help
D. importance
什么叫煤气爆炸？
