a2=16,则a是[ ]
A.4或﹣4
B.﹣4
C.4
D.8或﹣8
答案:A
Expo 2010 Shanghai China will offer ____ wonderful opportunity for ____ cross - culture dialogues.
A.a;不填
B.a; the
C.不填;the
D.the;不填
采用证券给付结算方式行权且权证在行权期满时为价内权证的,代为办理权证行权的证券经纪商应在权证期满前的5个交易日提醒未行权的权证持有 * * 证即将期满,或按事先约定代为行权。( )