个人所得税制度按照课征方法的不同可以分为分类所得税制、综合所得税制和混合所得税制三大类？（）
参考答案：对
Cheer up! ________things as they are and you will enjoy every day of your life.
A．Taking
B．To take
C．Take
D．Taken
“检疫”正确的翻译为( )。
A．inspection B．quarantine C．appraisal D．treatment
