—________.
—Congratulations!
A:Sorry for breaking the glass.
B:How are you feeling today?
C:I was awarded first prize in the writing contest.
D:Why not take the underground to the university?
从产业结构上看,我国高技术产业发展格局呈现出的趋势是( )
某服装店购进一批甲、乙两种款型时尚T恤衫,甲种款型共用了7800元,乙种款型共用了6400元,甲种款型的件数是乙种款型件数的1.5倍,甲种款型每件的进价比乙种款型每件的进价少30元.
(2015•丽水)解一元二次方程x2+2x﹣3=0时,可转化为解两个一元一次方程,请写出其中的一个一元一次方程____.