特异性投射系统不.经过.的结构是()
A.感受器
B.传入纤维
C.脑干网状结构
D.丘脑感觉接替核
E.大脑皮层
参考答案:C
There____a great number of students over there. The number of the Students ________five thousand.
A. is; are B. are; is C. are; are
食品干制前的重量为9千克,干制品重量为1千克,复水后干制品沥干重为8千克,则它的干燥比为(),复水比为()。