You'd better put your heart into study. You see, the ________ you are, the ______ progress (进步) you'll make.
A:careful, much
B:more careful, more
C:most careful, most
D:carefully, many
八年级学生方平在放学回家的路上被男青年拦住,强行索要100元“保护费”,此时,他应该( )
①以死抗争 ②忍气吞声 ③设法周旋,伺机呼救 ④给钱后立即报案
山东省简称“鲁”,山西省简称“晋”,这些简称源于西周实行的( )