【单选题】已知数列{ a n }满足 a 1 =0, a n + 1 = a n +2 n ,那么 a 2 009 的值是( )
【单选题】009 009.mp3:
C.
That’s very kind of you.
【单选题】()指在居室空间的某些要素被限定的情况下进行设计的方法。
【单选题】009 009.mp3:
C.
Ask someone to repair the computer.
D.
Borrow a computer from the company.
【简答题】(三009?游仙区模拟)质数×质数=合数.______.