唐玄宗早期政治清明,任用贤相,称为开元盛世,但晚年因宠爱杨贵妃,酿成______,长安沦陷,从此唐朝由盛而衰,一蹶不振。
参考答案:安史之乱
Goodbye, then," she said, without even __________from her book.
A. looking down
B. looking up
C. looking away
D. looking on
二维条码将条形码的信息空间从一维扩展到二维,可以从()方向获取信息
A.水平
B.垂直
C.产品