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
