人生的意义包括（   ）

①自身对社会的体验和感悟     

②追求卓越，敢于创新，善于创造

③及时行乐，使自己轻松、愉快 

④通过自己的创造性劳动，为社会、为他人作贡献

A．①③④

B．②③④

C．①②③

D．①②④

The result of the entrance exams was not made ______ to the public until last Thursday. [ ]

A. knowing

B. to know

C. known

D. to be known