We shouldn't watch ___________ TV because it's bad for our _____________.
A:too much, healthy
B:much too, heath
C:too much, health
D:much too, healthy
若关于x的方程x-3x-2=m2-x有增根,则m的值为( )
纤维素是地球上含量最丰富的多糖类物质,下列是关于分离土壤中能够分解纤维素的微生物的相关问题,请回答: