A:①②③
B:②③④
C:①②④
D:①③④
—Thank you, Mr. Zhang. We'll try our best.
从伏尔泰的自由和法制、孟德斯鸠的三权分立、卢梭的人民主权到康德的道德有限理论,这些观点( )
数列{an}是等差数列,a5=9,a7+a8=28,,则a4=( )
The flood last month in the east was a real disaster,________19 people dead and 78 missing.