2x-7≤5-2x①x+1＞3+x2②，
由①得，x≤3，
由②得，x＞1，
所以，不等式组的解集是1＜x≤3．
I like ________________voice. [ ]
A. his
B. he
C. she
--Della likes dancing, but doesn't like swimming.. ----_____.
A．So does Mary
B．Neither does Mary
C．So it is with Mary
D．Nor does Mary
