已知f(x)在R上是奇函数,且f(x+4)=f(x),当x∈(0,2)时,f(x)=2x2,则f(7)= [ ]
A.﹣2
B.2
C.﹣98
D.98
答案:A
— I like speaking better than listening in English learning.
—Oh, really? I think you should be good at of them.
A.both
B.neither
C.some
D.all
缺血性脑血管病包括:___________、________、_____________。