经济增长是指一个特定时期内一国（或地区）经济产出和居民收入的增长。（）
参考答案：对
Tiger Woods said that he needed to have his attention _____ on being a better husband, father and person.
A．focusing
B．focus
C．be focused
D．focused
下列属于要约的是( )。
A．招标书
B．投标书
C．中标通知书
D．对标书进行决标
