青稞中的主要抗营养因子是()。
参考答案:β-葡聚糖
18. ----- Has Mary finished writing her article ?
----- No, and it _____ before class was over.
A.should be finished
B.should finish
C.should have finished
D.ought to have been finished
密斯·凡·得·罗一生对建筑的贡献是( )。
A.创建了有机建筑论B.善于运用钢筋混凝土等新材料C.运用钢框架结构和玻璃为现代建筑手段D.提倡走工业化道路