A . 22
B . 21
C . 20
D . 19
[主观题]1,6,13,()A.22;B.21;C.20;D.19;
[单选题]:[6/(1×7)]-[6/(7×13)]-[6/(13×19)]-[6/(19×25)]-……-[6/(97×103)]= ( )A.433/567B.532/653C.522/721D.436/673
[单选题]1 6 13 22 ( )A.27B.29C.33D.46
[单选题]:1,1,3,6,2,8,13,104,(),()。A.13,169 B.11,176 C.9,81 D.7,48
[单选题]1,3,3,6,7,9,13,12,( ),( )。A.19.18B.19,15C.21,15D.27,18
[单选题]0,1/6,3/8,1/2,1/2,( )A.5/13 B7/13 C5/12 D7/12
[单选题]2,1,6/7,4/5,10/13,( )A.4/3 B.3/4C.7/15 D. 7/16
[单选题]正常恒牙列时期是指A.6岁左右至13、14岁B.婴儿6个月至6岁左右C.13、14岁以后D.18岁以后E.全部恒牙萌出以后
[试题](任选6空,超过6空,按前6空评分)13.(1)青海长云暗雪山,_________ 。(王昌龄《从军行》)
[单选题]:2-1,13+1,13,( )。A.5-14 B.2 C.15-1 D.3