A:Being; being
B:To be; being
C:Being; to be
D:To be; to be
bāng zhù
yuàn yì
yǔ zhòu
jué dìng
____
shì jiè
mín zú
shāng diàn
wū hēi
位于我国新疆南部,其内部有我国最大沙漠﹣塔克拉玛干沙漠,边缘分布星点状绿洲的盆地是____ .
若分式x2-1x-1的值为0,则x的值为( )