已知{an}为等差数列,a1+a3+a5=105,a2+a4+a6=99,则a20等于[ ]
A.﹣1
B.1
C.3
D.7
答案:B
小儿高热惊厥首选止痉药物是()
A.氯硝西泮
B.苯巴比妥
C.地西泮
D.苯妥英钠
E.咪达唑仑
Lily her husband the moment she met him, but lily’s friends don’t believe that at all.
A.took up
B.took after
C.took over
D.took to