He had a bad cold, _______ he kept on working as usual.
A:so
B:but
C:though
已知函数f(x)=|2x﹣a|+|2x+3|,g(x)=|x﹣1|+2.
(Ⅰ)若a=1,解不等式f(x)<6;
(Ⅱ)若对任意x1∈R,都有x2∈R,使得f(x1)=g(x2)成立,求实数a的取值范围.
欧洲第一长河是: