黏液样变是指间质内有()
A.蛋白质蓄积
B.粘多糖蓄积
C.蛋白质和粘多糖蓄积
D.蛋白质-粘多糖复合物蓄积
E.以上都不是
参考答案:C
—What should we do first if we want to develop our village ?
—A lot of new roads ____, I think.[ ]
A. have to build
B. must build
C. have built
D. must be built