面向21世纪,我国经济的进一步发展,必须大力依靠科技创新和()创新。从这个意义上说,我们推进改革开放和现代化建设的任务更艰巨了。
A.观念
B.技术
C.体制
参考答案:C
32._________on the lonely island_________more difficult than they had expected.
A.Survivor…proved
B.Surviving…proved
C.Survival…was proved
D.To survive…proves
聚乙烯胶粘带防腐的优缺点?