“青梅竹马”取自下列哪个典故
李白《长干行》
白居易《长恨歌》
李煜《虞美人》
李商隐《无题》
Her abilities are not fully ___________ by her employer.
collected
appreciated
recorded
guaranteed
The price ___________ dinner, bed, and breakfast.
A. includes
B. volunteers
C. creates
D. awards
At first he said that he did not steal the money but he later __________ (to) it.
A. achieved
B. preferred
C. guaranteed
D. admitted
点A(-2,3)与点B(-2,-3)在直角坐标系中 ( )
关于x轴对称
关于y轴对称
关于原点对称
不关于坐标轴和原点对称。
若|a|=4,|b|=2,且|a+b|=a+b, 那么a-b的值只能是( ).
把前1992个数1,2,3,…,1992的每一个数的前面任意填上“+”号或“-”号,然后将它们相加,则所得之结果为( )