纸制太阳伞()
参考答案:6601.9900
—How long have you _________ the book?
—For several weeks. [ ]
A. bought
B. borrowed
C. lent
D. had
心理压力可以说是个体对环境中具有的( )刺激,经认知其性质后所表现的反应。
A.重大性
B.威胁性
C.艰难性
D.突然性