计算（-1）2008+（-1）2009所得结果是（ ）
A．-2
B．0
C．1
D．2
（-1）2008+（-1）2009=1+（-1）=0．
故选B．
I had meant to meet you at the airport this morning but I was too busy for I_______ a report.
A．wrote
B．was writing
C．have written
D．had written
The Dragon Boat Festival, which is celebrated _______QuYuan, falls on the fifth day of the fifth lunar month.
A．in praise of
B．in search of
C．in memory of
D．in want of
