下列选项中,属于动植物细胞共有的糖类是[ ]
A.葡萄糖、核糖、脱氧核糖
B.葡萄糖、淀粉和果糖
C.淀粉、脱氧核糖、乳糖
D.麦芽糖、果糖、乳糖
答案:A
—Can you cook eggs with tomatoes?
—Yes, of course. ______ can do it, because it is easy, I think. [ ]
A. Anyone
B. Someone
C. No one
D. None of us
型砂中含水分过多,导致铸件产生()
A、气孔;
B、热裂;
C、砂眼;