The father expected the twins to be doctors, but _______ of them liked to study medicine.
A:both
B:neither
C:all
D:none
19世纪60年代的俄国农奴制改革和日本明治维新,这两次改革相同的内容是( )
下列化学用语与含义相符的是( )
已知函数fx是定义在R上的单调增函数且为奇函数,数列an是等差数列,a1007>0,则fa1+fa2+fa3+⋯+fa2012+fa2013的值( ).
duō suo
wéi qún
kù dōu
yìng bì
chú chuāng
pàn luàn
____