台湾的经济特点是( )
A:以农业为主的经济
B:以农副产品加工为主的经济
C:以重工业为主的经济
D:“进口—加工—出口”型经济
I decided____ (buy) it and it was ____ (cheap) than the science book.
结合显微镜使用,请回答问题
写出以 4+17,4-17为两根的关于x的一元二次方程____ .
— Tim,how do your parents like popular pop music?— ________ my dad _________ my mom likes it. They both prefer classical music.