下列人类活动方式可取的是[ ]
A.在内蒙古草原上垦荒种粮
B.在长江中下游地区围湖造田
C.在山东丘陵地区大面积种植水稻
D.在青藏高原上发展畜牧业
答案:D
I really wanted to help those homeless children in the flooded areas, ______ I donated all the pocket money that I had saved for months.
A.so
B.because
C.since
D.for
口服乳果糖可治疗肝性脑病的机制是抑制( )
A.白蛋白合成不足B.门脉压力增高C.血氨产生过多D.便秘E.脾大,脾功能亢进