仿金层很薄,且本身没有抗氧化的能力,在湿热的环境中易变色和泛黑斑。
参考答案:对
Little ____that we were watching his every move, so he seemed to be going his own way in this business.
A.he realized
B.he didn’t realize
C.didn’t realize
D.did he realize
从事过度紧张的作业,可出现焦虑、感情冷漠、抑郁或兴奋、易怒等,这些可贴切地归纳于()
A.行为表现
B.性格表现
C.生理反应
D.生物反应
E.心理反应